TY  - RPRT
TI  - Geology and beryl deposits of the Peerless pegmatite, Pennington County, South Dakota
AU  - Douglas M. Sheridan
AU  - Hal G. Stephens
AU  - Mortimer H. Staatz
AU  - James J. Norton
PY  - 1955
DO  - 10.3133/tei226
UR  - https://pubs.usgs.gov/publication/tei226
ID  - tei226
ER  -