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Scientific American 1902-02-01
538/1099
Survey work of the Isthmian Canal Commission engineers at Nicaragua. Gaging a stream. Leveler and asistant. Sediment gage car. Surveying party in camp. Aerial trolley car for use in river gaging.
Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past
Restoration by: magscanner
- Created on
- Monday 15 March 2010
- Posted on
- Monday 15 March 2010
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