Cost Keeping for Small Metal Mines Page: Title Page
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Technical Paper 223
DEPARTMENT OF THE INTERIOR
FRANKLIN K. LANE, SECRETARY
BUREAU OF MINES
VAN. H. MANNING, DIRECTOR
COST KEEPING FOR SMALL
J. C. PICKERING
GOVERNMENT PRINTING OFFICE
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Pickering, J. C. Cost Keeping for Small Metal Mines, report, February 1919; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc66479/m1/1/?rotate=90: accessed April 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.