Heinrich, E. William 1918- Pegmatite mineral deposits in Montana. - Butte, Montana School of Mines, 1948. - vii, 56 p. illus., maps (1 fold.) 28 cm. "References": p. 55-56. LCCN: gs 49000121 Subjects--Topical Terms: Mines and mineral resources--Montana.Pegmatites. LC Class. No.: TN948.P38 / H4