The Online Books Page

Books by J. B. Littlefield:

Books in the extended shelves:

• Littlefield, J. B.: Bureau of Mines midget impinger for dust sampling (U.S. Dept. of the Interior, Bureau of Mines, 1937), also by H. H. Schrenk and Florence L. Feicht (page images at HathiTrust)
• Littlefield, J. B.: Dust sampling with the Bureau of Mines midget impinger : using a new hand-operated pump (U.S. Dept. of the Interior, Bureau of Mines, 1938), also by H. H. Schrenk (page images at HathiTrust)
• Littlefield, J. B.: Efficiency of impingers for collecting lead dusts and fumes (U.S. Dept. of the Interior, Bureau of Mines, 1938), also by H. H. Schrenk and Florence L. Feicht (page images at HathiTrust)
• Littlefield, J. B.: Inflammable gases produced by thermal decomposition of plastic insulators in an electric arc (U.S. Dept. of Commerce, Bureau of Mines, 1932), also by W. P. Yant (page images at HathiTrust)
• Littlefield, J. B.: Konimeter (U.S. Dept. of the Interior, Bureau of Mines, 1938), also by H. H. Schrenk, C.E. Brown, and United States Bureau of Mines (page images at HathiTrust)
• Littlefield, J. B.: Relation of dust concentration to depth of hole during wet drilling (U.S. Dept. of the Interior, Bureau of Mines, 1938), also by H. H. Schrenk (page images at HathiTrust)

Find more by J. B. Littlefield at your library, or elsewhere.