Voluntary product standard. - United States. National Bureau of Standards ([Washington, D.C.] : U.S. Dept. of Commerce, National Bureau of Standards; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.])
Description based on: PS 1-74; title from cover.
Each no. has also a distinctive title.
Mode of access: Internet.
Keywords: Standardization -- United States