Pegmatites in the Beecher Rock basin,
Gwynne, Charles Sumner, 1885-
Pegmatites in the Beecher Rock basin, by Charles S. Gwynne. - Vermillion, S.D., University of South Dakota, 1944. - 23 p. illus. - South Dakota Geological Survey. Report of investigations, no. 48 . - Report of investigations (South Dakota Geological Survey) ; no. 48. .
At head of title: State of South Dakota, M. Q. Sharpe, Governor. State Geological Survey, E. P. Rothrock, State Geologist. Reproduced from type-written copy.
"Selected bibliography": leaf at end.
gs 44000050
Pegmatites.
Geology--South Dakota--Custer County.
QE461 / .G9
Pegmatites in the Beecher Rock basin, by Charles S. Gwynne. - Vermillion, S.D., University of South Dakota, 1944. - 23 p. illus. - South Dakota Geological Survey. Report of investigations, no. 48 . - Report of investigations (South Dakota Geological Survey) ; no. 48. .
At head of title: State of South Dakota, M. Q. Sharpe, Governor. State Geological Survey, E. P. Rothrock, State Geologist. Reproduced from type-written copy.
"Selected bibliography": leaf at end.
gs 44000050
Pegmatites.
Geology--South Dakota--Custer County.
QE461 / .G9