Circular of the Bureau of Standards
Subtitle: United States Government specification for Portland Cement
Series: Circular of the Bureau of standards -- no. 33
Publisher: Govt. Print. Off.
Published: 1912
Language: eng
Number of pages: 28
Other titles: United States Government specification for Portland Cement.
Notes: S.W. Stratton, director.

At head of title: Department of commerce and labor.