TY  - RPRT
TI  - Petrology and petrography for USGS test wells 1, 2, and 3 in the Madison Limestone in Montana and Wyoming
AU  - Paul A. Thayer
PY  - 1981
DO  - 10.3133/ofr81221
UR  - https://pubs.usgs.gov/publication/ofr81221
ID  - ofr81221
ER  -