Grinding and Polishing Machine : United States Naval ...
Grinding and Polishing Machine by United States Naval Observatory. Publication date 1909 Topics USNO, glass plate. Grinding and Polishing Machine photo house about 1909 p. 51 n. 8 v. 11. USNOA-2021-015. USNO Glass Plate Publication Images. Plate 085. Addeddate 22:05:58 Identifier
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