At head of title: U.S. Department of commerce. Harry L. Hopkins, secretary. National bureau of standards. Lyman J. Briggs, director ..."Issued Apr. 17, 1940."Mode of access: Internet
At head of title: Department of commerce. Bureau of standards. George K. Burgess, director.Mode of a...
"Revised and amended January 1, 1903, amended April 1, 1904, amended July 1, 1904."Mode of access: I...
At head of title: Department of commerce, Bureau of standards. S.W. Stratton, director.The prepara...
At head of title: U.S. Department of commerce. Harry L. Hopkins, secretary. National bureau of stand...
At head of title: U.S. Department of Commerce. Daniel C. Roper, Secretary. National Bureau of Stand...
At head of title: U.S. Department of Commerce, Harry L. Hopkins, secretary ; National Bureau of Stan...
At head of title: Department of commerce. Bureau of standards. George K. Burgess, director.Mode o...
At head of title: Department of commerce. Bureau of standards. George K. Burgess, directory.Mode ...
At head of title: U. S. Department of Commerce. Harry L. Hopkins, secretary. National Bureau of Stan...
At head of title: Department of commerce. Bureau of standards. George H. Burgess, director.Mode o...
At head of title: Department of commerce. Bureau of standards. George K. Burgess, director.Mode o...
At head of title: Department of commerce. Bureau of standards. George K. Burgess, director.Mode o...
At head of title: Department of commerce.S.W. Stratton, director.Mode of access: Internet
1st edition issued with title: Proposed national electrical safety code ...S. W. Stratton, director....
At head of title: Department of commerce. Bureau of Standards. S. W. Stratton, director.Mode of ac...
At head of title: Department of commerce. Bureau of standards. George K. Burgess, director.Mode of a...
"Revised and amended January 1, 1903, amended April 1, 1904, amended July 1, 1904."Mode of access: I...
At head of title: Department of commerce, Bureau of standards. S.W. Stratton, director.The prepara...
At head of title: U.S. Department of commerce. Harry L. Hopkins, secretary. National bureau of stand...
At head of title: U.S. Department of Commerce. Daniel C. Roper, Secretary. National Bureau of Stand...
At head of title: U.S. Department of Commerce, Harry L. Hopkins, secretary ; National Bureau of Stan...
At head of title: Department of commerce. Bureau of standards. George K. Burgess, director.Mode o...
At head of title: Department of commerce. Bureau of standards. George K. Burgess, directory.Mode ...
At head of title: U. S. Department of Commerce. Harry L. Hopkins, secretary. National Bureau of Stan...
At head of title: Department of commerce. Bureau of standards. George H. Burgess, director.Mode o...
At head of title: Department of commerce. Bureau of standards. George K. Burgess, director.Mode o...
At head of title: Department of commerce. Bureau of standards. George K. Burgess, director.Mode o...
At head of title: Department of commerce.S.W. Stratton, director.Mode of access: Internet
1st edition issued with title: Proposed national electrical safety code ...S. W. Stratton, director....
At head of title: Department of commerce. Bureau of Standards. S. W. Stratton, director.Mode of ac...
At head of title: Department of commerce. Bureau of standards. George K. Burgess, director.Mode of a...
"Revised and amended January 1, 1903, amended April 1, 1904, amended July 1, 1904."Mode of access: I...
At head of title: Department of commerce, Bureau of standards. S.W. Stratton, director.The prepara...