NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

The Purification of the Mineral Product

Harold Barger, Sam H. Schurr

Chapter in NBER book The Mining Industries, 1899-1939: A Study of Output, Employment, and Productivity (1944), Harold Barger and Sam H. Schurr (p. 146 - 157)
Published in 1944 by NBER

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