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From Sundials to Atomic Clocks: Understanding Time and Frequency
Book presenting an introduction to time, timekeeping, and the uses of time information, especially in the scientific and technical areas. Serves as introductory text for laymen.
Date:
December 1977
Creator:
Jespersen, James & Fitz-Randolph, Jane
System:
The UNT Digital Library
Safety Rules for the Installation and Maintenance of Electrical Supply and Communication Lines: Comprising Part 2 of the Fourth Edition National Electrical Safety Code
Report containing information regarding "the construction and maintenance of overhead and underground electrical supply and communication lines" (p. ii).
Date:
April 15, 1927
Creator:
United States. Bureau of Standards.
System:
The UNT Digital Library