@misc{indiciaed0d87a857d41, title = {Geology and ground-water resources of the Two Medicine unit and adjacent areas, Blackfeet Indian Reservation, Montana, with a section on chemical quality of water}, author = {Q.F. Paulson and Tom V. Zimmerman and Russell H. Langford}, year = {1965}, doi = {10.3133/ofr65117}, url = {https://pubs.usgs.gov/publication/ofr65117}, note = {Source identifier: ofr65117} }