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Coast and geodetic survey develops new signal lamp
New signal lamp for use in triangulation surveying; it is lighter in weight, more compact, and more powerful than previous designs.
Coast and geodetic survey develops new signal lamp
New signal lamp for use in triangulation surveying; it is lighter in weight, more compact, and more powerful than previous designs.
Coast and geodetic survey develops new signal lamp
Civ Eng (NY)
Colbert, L.O. (author)
1942
Article (Journal)
English
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