TY  - RPRT
TI  - Beryl deposits of the Beecher No. 3-Black Diamond pegmatite, Custer County, South Dakota
AU  - Jack Allison Redden
PY  - 1959
DO  - 10.3133/b1072i
UR  - https://pubs.usgs.gov/publication/b1072I
ID  - b1072I
ER  -