The Online Books Page

Online Books by

Mary Della Hopkins

• Hopkins, Mary Della: Comparison of an Eight-Hour Plant and a Ten-Hour Plant (Public health bulletin #106; Washington: GPO, 1920), also by Josephine Goldmark
  • multiple formats at Google
  • multiple formats at archive.org

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Additional books from the extended shelves:

• Hopkins, Mary Della: Comparison of an eight-hour plant and a ten-hour plant (G.P.O., 1920), also by Josephine Goldmark, Frederic S. Lee, P. Sargant Florence, and United States Public Health Service (page images at HathiTrust)
• Hopkins, Mary Della: U. S. Department of Labor. James J. Davis, secretary. Women's Bureau. Mary Anderson, director. (U.S. Govt. Print Off., 1928), also by United States Women's Bureau (page images at HathiTrust)

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Edited by John Mark Ockerbloom (onlinebooks@pobox.upenn.edu)
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