The mining industries, 1899-1939 :
a study of output, employment, and productivity /
by Harold Barger and Sam H. Schurr.
APA Citation
Barger, H., Schurr, S. H., National Bureau of Economic Research. (1944). The mining industries, 1899-1939: a study of output, employment, and productivity. New York: National Bureau of Economic Research.
MLA Citation
Barger, Harold, Sam H Schurr, and National Bureau of Economic Research. The Mining Industries, 1899-1939: a Study of Output, Employment, And Productivity. New York: National Bureau of Economic Research, 1944.
Warning: These citations may not always be complete (especially for serials).