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July 20, 2010 | History

Changes in technology and labor requirements in the crushed-stone industry 1 editions

Changes in technology and labor requirements in the crushed-stone indu ...
Harry S. Kantor
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1 edition First published in 1939

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Cover of: Changes in technology and labor requirements in the crushed-stone industry
Changes in technology and labor requirements in the crushed-stone industry
1939, Works Progress Administration, National Research Project in cooperation with Dept. of the Interior, Bureau of Mines
in English

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July 20, 2010 Edited by WorkBot add subjects from MARC records
January 21, 2010 Edited by WorkBot add subjects and covers
December 9, 2009 Created by WorkBot add works page