"Much of the information ... was compiled by Dr. R. R. Sayers ... when he was serving as chief of the Division of industrial hygiene, United States Public health service.
Bibliographical footnotes.
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"Much of the information ... was compiled by Dr. R. R. Sayers ... when he was serving as chief of the Division of industrial hygiene, United States Public health service.
Bibliographical footnotes.
There are no comments on this title.