National safety code for the protection of the heads and eyes of industrial workers.

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Title: National safety code for the protection of the heads and eyes of industrial workers.
Author: United States. National Bureau of Standards.; Lloyd, Morton Githens, 1874-1941.; Oakes, Charles E.
URI: http://jhir.library.jhu.edu/handle/1774.2/34263
Date: 1921.
Subject: Safety appliances.

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