TY  - RPRT
TI  - Description of the physical environment and coal-mining history of west-central Indiana, with emphasis on six small watersheds
AU  - Jeffrey D. Martin
AU  - Charles G. Crawford
AU  - Richard F. Duwelius
AU  - Danny E. Renn
PY  - 1990
DO  - 10.3133/wsp2368a
UR  - https://pubs.usgs.gov/publication/wsp2368A
ID  - wsp2368A
ER  -