TY  - RPRT
TI  - Bentonite deposits of the northern Black Hills district, Wyoming, Montana, and South Dakota
AU  - Maxwell M. Knechtel
AU  - Sam H. Patterson
PY  - 1962
DO  - 10.3133/b1082m
UR  - https://pubs.usgs.gov/publication/b1082M
ID  - b1082M
ER  -