Special publication / Montana Bureau of Mines and Geology.

no.19; no.20 1961; no.30; no.33; no.35 1965; no.34-40 1965-1966; no.36; no.38; no.41; no.42; no.43; no.44; no.45; no.46; no.48; no.49; no.51; no.57; no.57-61 1972-1973; no.66; no.67; no.68; no.68 1975; no.70; no.73; no.74; no.75; no.76; no.78; no.80; no.81; no.82; no.83; no.84 1982; no.85 1982; no.86; no.87; no.88; no.89 1984; no.90; no.91; no.92; no.92 1985; no.93; no.95; no.95-99; no.95-96 (1987-88); no.96; no.102; no.103; no.104; no.104-106 1992-1993; no.105; no.106; no.107 1994; no.108 1994; no.109 1995; no.110 1995