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Etienne Geoffroy Saint-Hilaire (1772-1844). French naturalist. He was chosen in 1798 to take part
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Etienne Geoffroy Saint-Hilaire (1772-1844). French...

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

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

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

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

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.

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.

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...

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

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

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.

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...

Lemonnier researching electrical speed.
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Lemonnier researching electrical speed.

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

Megatherium americanum.
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Megatherium americanum.

Grand Canyon National Park
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Grand Canyon National Park

Winslow Arizona Meteor Crater
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Winslow Arizona Meteor Crater

Petrified Forest
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Petrified Forest

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