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J. Robert Oppenheimer, nuclear physicist (1904 - 1967) .
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J. Robert Oppenheimer, nuclear physicist (1904 - 1...

Emergency help after storm in the Emmental; two men doing clearing work 1953.
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Emergency help after storm in the Emmental; two me...

Andermatt, 11 soldiers killed by avalanche, soldiers at farewell ceremony, 1945 .
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Andermatt, 11 soldiers killed by avalanche, soldie...

August Schneider, engineer, 1953.
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August Schneider, engineer, 1953.

J. Robert Oppenheimer, nuclear physicist (1904 - 1967) .
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J. Robert Oppenheimer, nuclear physicist (1904 - 1...

Thadeus Reichstein, chemist, 1950.
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Thadeus Reichstein, chemist, 1950.

Professor Dr. Wolfgang Pauli
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Professor Dr. Wolfgang Pauli

Nobel laureate Prof. Dr. Leopold Ruzicka, Zurich 1942
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Nobel laureate Prof. Dr. Leopold Ruzicka, Zurich 1...

Prof. Paul Scherrer at the ETH, 1955
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Prof. Paul Scherrer at the ETH, 1955

Prof. Dr. phil. Siegfried Rosin, Berne 1957
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Prof. Dr. phil. Siegfried Rosin, Berne 1957

Emergency help after storm in the Emmental 1953.
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Emergency help after storm in the Emmental 1953.

August Schneider, engineer, 1953.
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August Schneider, engineer, 1953.

Frozen Lauerzersee, Ferry to Schwanau.
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Frozen Lauerzersee, Ferry to Schwanau.

Professor Dr. Friedrich Dessauer 1951
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Professor Dr. Friedrich Dessauer 1951

Pfaffnau. natural gas deposit. 1964
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Pfaffnau. natural gas deposit. 1964

Clara Zollikofer 1956.
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Clara Zollikofer 1956.

August Schneider, engineer, 1953.
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August Schneider, engineer, 1953.

Adolf Osterwalder 1961.
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Adolf Osterwalder 1961.

Paul Scherrer in the forties.
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Paul Scherrer in the forties.

Lake of Constance, Untersee frozen up; 1954 .
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Lake of Constance, Untersee frozen up; 1954 .

Rene Clavel ca. 1956.
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Rene Clavel ca. 1956.

Paul Scherrer in the forties.
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Paul Scherrer in the forties.

Professor Dr. Wolfgang Pauli.
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Professor Dr. Wolfgang Pauli.

Lake of Constance, Untersee frozen up; 1954.
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Lake of Constance, Untersee frozen up; 1954.

Paul Scherrer in the forties.
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Paul Scherrer in the forties.

Paul Scherrer in the forties.
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Paul Scherrer in the forties.

Professor Jean Trv©moliv©res, scientist and Professor M. Demole 1968 .
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Professor Jean Trv©moliv©res, scientist and Profes...

Prof. Paul Scherrer with assistants at the ETH, 1955
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Prof. Paul Scherrer with assistants at the ETH, 19...

Professor Dr. Wolfgang Pauli
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Professor Dr. Wolfgang Pauli

Prof. Paul Scherrer at the ETH, 1955.
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Prof. Paul Scherrer at the ETH, 1955.

August Schneider, engineer, 1953 .
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August Schneider, engineer, 1953 .

Professor Jean Trv©moliv©res, scientist 1968 .
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Professor Jean Trv©moliv©res, scientist 1968 .

Professor Dr. Wolfgang Pauli
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Professor Dr. Wolfgang Pauli

Limnologists Congress Zurich 1948: Prof. Dr. Franz Ruttner
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Limnologists Congress Zurich 1948: Prof. Dr. Franz...

Andermatt, 11 soldiers killed by avalanche, soldiers at farewell ceremony, 1945 .
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Andermatt, 11 soldiers killed by avalanche, soldie...

Thadeus Reichstein, chemist, 1950.
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Thadeus Reichstein, chemist, 1950.

Medieval German Castle
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Medieval German Castle

The Lion of Chaeronea was erected after the battle of Chaeronera (338 B.C), between the forces of
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The Lion of Chaeronea was erected after the battle...

California Resources Map In 1866
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California Resources Map In 1866

Embarcadero Freeway Being Torn Down
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Embarcadero Freeway Being Torn Down

San Francisco Earthquake Diners
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San Francisco Earthquake Diners

Lavoisier explains to his wife the result of his experiments with air, Antoine Laurent de Lavoisier
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Lavoisier explains to his wife the result of his e...

Ernst Haeckel, Natural History of Creation. Frontispiece, different heads. The Family Group of
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Ernst Haeckel, Natural History of Creation. Fronti...

Charles Robert Darwin (February 12, 1809 - April 19, 1882) was a British naturalist. He is
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Charles Robert Darwin (February 12, 1809 - April 1...

Portrait of Claude Perrault-
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Portrait of Claude Perrault-

Steinbrucke.
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Steinbrucke.

Charles Dumoulin (1500-1566). French jurist. Portrait. Engraving. Sciences & Lettres au Moyen Age
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Charles Dumoulin (1500-1566). French jurist. Portr...

Michael Alexander Michelson (1815-1899). Latvian painter. Landscape with River, 1880. Oil on canvas
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Michael Alexander Michelson (1815-1899). Latvian p...

The figure represents Don John of Austria (died 1578), A Spanish admiral and general. He was the
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The figure represents Don John of Austria (died 15...

United States of America. Hudson River Palisades. Engraving by Milbert. Panorama Universal. History
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United States of America. Hudson River Palisades. ...

United States. Mississippi flood. Engraving by Danvin. Panorama Universal. History of the United
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United States. Mississippi flood. Engraving by Dan...

United States. Natural bridge in Virginia. Engraving by Milbert. Panorama Universal. History of the
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United States. Natural bridge in Virginia. Engravi...

United States. Niagara Falls. Engraving by Van der Burgh. Panorama Universal. History of the United
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United States. Niagara Falls. Engraving by Van der...

Spain, Valencia province. The Albufera lagoon. Engraving by Sierra, 19th century. Cronica General
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Spain, Valencia province. The Albufera lagoon. Eng...

United States. Niagara Falls. Engraving by Milbert. Panorama Universal. History of the United
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United States. Niagara Falls. Engraving by Milbert...

Adley Falls. Hudson river. State of New York. Engraving by Milbert. Panorama Universal. History of
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Adley Falls. Hudson river. State of New York. Engr...

View of River Nile
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View of River Nile

Colombo to Kandy Railway
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Colombo to Kandy Railway

An avalanche in the Alps
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An avalanche in the Alps

Femme écorçant du bois
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Femme écorçant du bois

Jeune garçon ramassant du bois
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Jeune garçon ramassant du bois

Erasmus Darwin.
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Erasmus Darwin.

People fleeing an eruption of Mt. Etna volcano.
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People fleeing an eruption of Mt. Etna volcano.

A Llama or Lama.
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A Llama or Lama.

Two men measure the length of a dead stranded whale.
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Two men measure the length of a dead stranded whal...

Eruption of Mt. Etna volcano in Sicily.
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Eruption of Mt. Etna volcano in Sicily.

San Francisco City Hall after the earthquake of April 18.
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San Francisco City Hall after the earthquake of Ap...

James Watt and other members of The Lunar Society of Birmingham.
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James Watt and other members of The Lunar Society ...

Robert William Boyle.
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Robert William Boyle.

Posthumous executiona of Oliver Cromwell.
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Posthumous executiona of Oliver Cromwell.

Sir Kenelm Digby.
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Sir Kenelm Digby.

William Gilbert in his study writing his book De Magnete, Magneticisque Corporibus, et de Magno Magnete Tellure.
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William Gilbert in his study writing his book De M...

An Elephant.
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An Elephant.

Albertus Seba.
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Albertus Seba.

A family of alchemists at work.
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A family of alchemists at work.

Lemonnier researching electrical speed.
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Lemonnier researching electrical speed.

Charles Robert Darwin.
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Charles Robert Darwin.

Flooding of the lock in Delfshaven.
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Flooding of the lock in Delfshaven.

The Lo Mustang earthquake, Nepal, India.
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The Lo Mustang earthquake, Nepal, India.

Bird's-eye view of Mesopotamia showing William Willcock's proposed scheme of irrigation.
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Bird's-eye view of Mesopotamia showing William Wil...

Louis-Guillaume Le Monnier aka Lemonnier.
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Louis-Guillaume Le Monnier aka Lemonnier.

Megatherium americanum.
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Megatherium americanum.

Joseph Priestley.
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Joseph Priestley.

King Victor Emanuel III of Italy and his wife Elena of Montenegro visit Messina.
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King Victor Emanuel III of Italy and his wife Elen...

Indigenous Peoples.
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Indigenous Peoples.

Different Forms Of Snow And Hailstones.
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Different Forms Of Snow And Hailstones.

San Francisco
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San Francisco

San Francisco
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San Francisco

Grand Canyon National Park
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Grand Canyon National Park

Winslow Arizona Meteor Crater
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Winslow Arizona Meteor Crater

Soldier Field In Chicago
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Soldier Field In Chicago

Petrified Forest
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Petrified Forest

Green Corn.
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Green Corn.

Cnicus Benedictus
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Cnicus Benedictus

Medicinal Plant
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Medicinal Plant

Medicinal Plant
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Medicinal Plant

Medicinal Plant
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Medicinal Plant

Medicinal Plant
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Medicinal Plant

Medicinal Plant
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Medicinal Plant

Medicinal Plant
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Medicinal Plant

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