Analyses of rocks and minerals from the laboratory of the United States Geological Survey, 1914-36,
Wells, Roger Clark, 1877-1944.
Analyses of rocks and minerals from the laboratory of the United States Geological Survey, 1914-36, tabulated by Roger C. Wells, chief chemist. - Washington, U.S. Govt. Print. Off., 1937. - x, 134 p. tables. 23 cm. - United States. Gelogical survey. Bulletin 878 .
At head of title: United States Department of the Interior.
gs 37000085
Rocks--Analysis.
Ores--Sampling and estimation.
Chemistry, Analytic.
QE75 / .B9 no. 878
Analyses of rocks and minerals from the laboratory of the United States Geological Survey, 1914-36, tabulated by Roger C. Wells, chief chemist. - Washington, U.S. Govt. Print. Off., 1937. - x, 134 p. tables. 23 cm. - United States. Gelogical survey. Bulletin 878 .
At head of title: United States Department of the Interior.
gs 37000085
Rocks--Analysis.
Ores--Sampling and estimation.
Chemistry, Analytic.
QE75 / .B9 no. 878