Installation and maintenance of electric supply and communication lines, safety rules and discussion comprising part 2, the discussion of part 2, the definitions and grounding rules of the fifth edition of the National electrical safety code., by United States. National Bureau of Standards

Title:	Installation and maintenance of electric supply and communication lines, safety rules and discussion comprising part 2, the discussion of part 2, the definitions and grounding rules of the fifth edition of the National electrical safety code.
Author:	United States. National Bureau of Standards
Note:	U.S. Govt. Print. Off., 1949

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Subject:	Electric lines
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