Safety rules for the installation and maintenance of electric supply and communication lines.
Comprising part 2 and the Grounding rules of the fifth edition, National electrical safety code. /
Issued September 23, 1941. Approved by the American standards association, August 27, 1941.

APA Citation

United States. National Bureau of Standards. (1941). Safety rules for the installation and maintenance of electric supply and communication lines: Comprising part 2 and the Grounding rules of the fifth edition, National electrical safety code. . Washington: U.S. Govt. Print. Off..

MLA Citation

United States. National Bureau of Standards. Safety Rules for the Installation And Maintenance of Electric Supply And Communication Lines: Comprising Part 2 And the Grounding Rules of the Fifth Edition, National Electrical Safety Code. . Washington: U.S. Govt. Print. Off., 1941.

Warning: These citations may not always be complete (especially for serials).