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Code of Lighting: Factories, Mills and Other Work Places : Bulletin of the United States Bureau of Labor Statistics, No. 556

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Replaces Bulletin 331.

At head of title: United States Department of Labor. W.N. Doak, secretary. Bureau of Labor Statistics. Ethelbert Stewart, commissioner.

Revision of 1930. American standard, approved by the American Standards Association, August 18, 1930. Sponsor, Illuminating Engineering Society.

U.S. Govt. Print. Off.

Washington

  • lcc: HD8051 .A62 no. 556
  • sudocs: L 2.3:556
  • oclc: 24425278

Public Domain


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