U.S. Department of Commerce; National Bureau of Standards
view article (10.004545)
Department of Commerce, Washington, DC; National Bureau of Standards, Washington, DC
NBS Handbook 81,
Safety Rules for the Installation and Maintenance of Electric Supply and Communication Lines. Comprising Part 2: The Definitions and the Grounding Rules of the Sixth Edition of the National Electrical Safety Code. National Bureau of Standards Handbook 81,
Government Printing Office, Washington, DC,
84 p.,
1961