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Fișier:Eiffel-lock.png

DescriptionEiffel-lock.png English: Illustration of proposed lock design by Gustav Eifel for Panama Canal Published in 'Le Genie Civil, France, 1888-02-18...


Fișier:The Engineering and Mining Journal 1889-07-20- Vol 48 Iss 3 (IA sim engineering-and-mining-journal 1889-07-20 48 3).pdf

rates of wage earnings in a great steel works. The Eiffel Tower Light.—The electric beam from_the Eiffel tower lantern has a luminous intensity of about...