The gold pan as a quantitative geologic tool /
Theobald, P. K.(Paul Kellogg),1928-
U.S. Atomic Energy Commission.cn
Geological Survey (U.S.)
Washington, [D.C.] : U.S. G.P.O.,
1957.
"This report concerns work done on behalf of the U.S. Atomic Energy Commission..."
Bibliography: p. 54.
Ore-dressing.
Heavy minerals.