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JSTOR: A Text-Book of Field Astronomy for Engineers
A Text-book of Field Astronomy for Engineers. By GEORCE C. COMSTOCK, Director of the Washburn Observatory, Professor of Astronomy in the University of ...
Universal Digital Library
A Text-book Of Field Astronomy For Engineers by GEORGE C.COMSTOCK L: English, Y: 1905, S: Astronomy, 237 pgs. A Text-book Of General Astronomy For Colleges ...
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