Geology and artesian water resources along Missouri and Milk rivers of northeastern Montana / by Eugene S. Perry.
- Butte, Mont. : Montana School of Mines, 1934.
vi, 34 p. : incl. ill., fold. map ; 28 cm.
- Memoir (Montana Bureau of Mines and Geology) ; 11.
Montana Bureau of Mines and Geology. Memoir ; no. 11