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DEPARTMENT OF COMMERCE AND LABOR
Bulletin
OF THE
Bureau of Standards
S. W. STRATTON, Director
Volume 6
1909-10
[Seal omitted]
WASHINGTON
GOVERNMENT PRINTING OFFICE
1910
DEPARTMENT OF COMMERCE AND LABOR
Bulletin
OF THE
Bureau of Standards
S. W. STRATTON, Director
Volume 6
1909-10
[Seal omitted]
WASHINGTON
GOVERNMENT PRINTING OFFICE
1910