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- catalog contributor b6486311.
- catalog contributor b6486312.
- catalog contributor b6486313.
- catalog contributor b6486314.
- catalog contributor b6486315.
- catalog contributor b6486316.
- catalog contributor b6486317.
- catalog created "[1940]".
- catalog date "1940".
- catalog date "[1940]".
- catalog dateCopyrighted "[1940]".
- catalog description "Includes bibliographical references.".
- catalog extent "xiv, 142 p.".
- catalog isPartOf "Mineral technology and output per man studies ; report no. E-14".
- catalog issued "1940".
- catalog issued "[1940]".
- catalog language "eng".
- catalog publisher "Philadelphia, Pa. : Work Projects Administration, National Research Project in cooperation with Dept. of the Interior, Bureau of Mines,".
- catalog spatial "United States.".
- catalog subject "Gold miners United States.".
- catalog subject "Gold mines and mining United States.".
- catalog subject "Hydraulic mining United States.".
- catalog subject "Miners United States.".
- catalog subject "Placer mining United States.".
- catalog subject "TN23 .N35 no.E-14".
- catalog title "Employment and income from gold placering by hand methods, 1935-37 / by Robinson Newcomb, Charles White Merrill, and R. L. Kiessling.".
- catalog type "text".