@book{28389,
	author = {Carpenter, Robert D. and University of Idaho.},
	title = {Mineral beneficiation by gravity concentration, a fundamental study.},
	publisher = {University of Idaho,},
	year = {1949.},
	series = {Pamphlet},
	address = {Moscow,},
	note = {"Issued under grant from the Special Research Fund, Project no. 12. School of Mines, University of Idaho in cooperation with Idaho Bureau of Mines and Geology."}
}