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7 résultats pour : speaking tubes

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The use of speaking tubes on the bridge of a naval vessel for communicating with other decks
ARP23A15_236

The use of speaking tubes on the bridge of a naval...

Talking Head of Albertys Magnes
ARP18A08_473

Talking Head of Albertys Magnes

Natural Philosophy
ARP18A08_490

Natural Philosophy

Illustrated acoustic physics
ARP15A00_404

Illustrated acoustic physics

Waiter in restaurant speaking to kitchen through a speaking tube
ARP07103_460000353

Waiter in restaurant speaking to kitchen through a...

Speaking tube: Idealised cross-section of a ship
ARP07103_460000370

Speaking tube: Idealised cross-section of a ship

Making recording on Emile Berliner's Gramophone
ARP07103_460000465

Making recording on Emile Berliner's Gramophone