Code for protection against lightning.
pts. I, II and III
(Supersedes M92 and H17) Issued Nov. 2, 1937.
Approved by the American standards association, Oct. 29, 1937.
|Corporate Author:||United States.|
Washington, Govt. print. off., 1937.
At head of title: U. S. Department of commerce ... Bureau of standards.
x, 96 p. incl. chart. 2 pl. on 1 L.
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|Full viewv.21(1937)||University of Illinois at Urbana-Champaign|