TY  - RPRT
TI  - Exploration for beryllium at the Helen Beryl, Elkhorn, and Tin Mountain pegmatites, Custer County, South Dakota
AU  - M.H. Staatz
AU  - L. R. Page
AU  - J.J. Norton
AU  - V.R. Wilmarth
PY  - 1963
DO  - 10.3133/pp297c
UR  - https://pubs.usgs.gov/publication/pp297C
ID  - pp297C
ER  -