Explanatory Note.
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Corporate Author: | |
Other title: | At head of title: Supplement to Bureau Circular no. 38. |
Format: | Government Document Book |
Language: | English |
Published: |
Washingtion, D.C. :
U.S. G.P.O.,
1912.
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Series: | Circular of the Bureau of Standards ;
no. 38 supp. |
Subjects: |