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Scientific American

September 1, 1939

1 min read

Telescoptics, September 1939

A Monthly Department for the Amateur Telescope Maker

By Alber T. G. Ingalls

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This article was originally published with the title “Telescoptics” in Scientific American Magazine Vol. 161 No. 3 (September 1939), p. 186
doi:10.1038/scientificamerican0939-186

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