United States government master specification for asphalt for mineral-surfaced roofing.
APA Citation
United States. National Bureau of Standards. (1924). United States government master specification for asphalt for mineral-surfaced roofing. [Washington: Govt. print. off..
MLA Citation
United States. National Bureau of Standards. United States Government Master Specification for Asphalt for Mineral-surfaced Roofing. [Washington: Govt. print. off., 1924.
Warning: These citations may not always be complete (especially for serials).