United States government master specification for slate-surfaced asphalt prepared roofing and shingles.
Contributors: United States. Bureau of Standards.
Series: Circular of the Bureau of Standards -- no. 285
Publisher: Government Printing Office
Published: 1925
Place of publication: Washington
Language: eng
Subjects: Roofing.
Other titles: Specification for prepared roofing and shingles
Notes: "Issued November 17, 1925."

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