United States government master specification for asphalt for unsurfaced built-up roofing.
Series: Circular of the Bureau of Standards -- no. 168; Federal Specifications Board specification -- no. 88
Publisher: Govt. Print. Off.
Published: 1924
Place of publication: Washington
Language: eng
Number of pages: 10
Subjects: Asphalt.; Roofing.
Other titles: Specification for asphalt
Notes: "Issued July 7, 1924."

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