Technology

Prestressed Concrete

Prestressed Concrete

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building material

Medal

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civilian and military award

Brougham

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vehicle

Estancia

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Latin American history

Scribner Family

Scribner Family

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American publishers

Crane

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materials handling

Chapman, John

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Biography, Legend, & Facts

Diesinking

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metallurgy

Crash

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cloth

DuMont, Allen B.

DuMont, Allen B.

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American engineer and inventor

Waterloo Station

Waterloo Station

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railroad station, London

Free-net

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bulletin-board network

Videoconferencing

Videoconferencing

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communications

Postcard

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Facts, History, & Examples

Foam Glass

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chemical compound

Composite Material

Composite Material

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construction

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