TY  - RPRT
TI  - Reconnaissance geologic map of the Big Fork-Avon environmental study area, Flathead, Lake, Lewis and Clark, Missoula, and Powell counties, Montana
AU  - I. J. Witkind
AU  - W.M. Weber
PY  - 1982
DO  - 10.3133/i1380
UR  - https://pubs.usgs.gov/publication/i1380
ID  - i1380
ER  -