TY  - RPRT
TI  - Diamond drilling exploration of the Beecher No. 3--Black Diamond pegmatite, Custer County, South Dakota
AU  - Jack Allison Redden
PY  - 1963
DO  - 10.3133/b1162e
UR  - https://pubs.usgs.gov/publication/b1162E
ID  - b1162E
ER  -