United States government master specification for drill (unbleached).
Contributors: United States. Bureau of Standards.
Series: Circular of the Bureau of Standards -- no. 367; Federal Specifications Board specification -- no. 557
Publisher: Government Printing Office
Published: 1928
Place of publication: Washington
Language: eng
Subjects: Drilling and boring.
Other titles: Specification for unbleached drill
Notes: "Issued July 27, 1928."

At head of title: Department of Commerce. Bureau of Standards.