Books by Bertrand L. Johnson:
Books in the extended shelves:
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Johnson, Bertrand L. (Bertrand Leroy), 1882-: Marketing of barite (U.S. Dept. of the Interior, Bureau of Mines, 1941), also by United States Bureau of Mines (page images at HathiTrust)- Johnson, Bertrand L. (Bertrand Leroy), 1882-: The Potash situation (Dept. of the Interior, Bureau of Mines, 1940), also by United States Bureau of Mines (page images at HathiTrust)
Find more by Bertrand L. Johnson at your library, or elsewhere.