Metalliferous deposits of the greater Helena mining region, Montana,
Pardee, Joseph Thomas, 1871-
Metalliferous deposits of the greater Helena mining region, Montana, by J.T. Pardee and F.C. Schrader. - Washington, U.S. Govt. Print. Off., 1933. - xi, 318 p. illus., 47 pl. (part fold. incl. maps (3 in pocket) plans, diagrs. 23 cm. - U.S. Geological survey. Bulletin 842 .
gs 33000415
Ore deposits--Montana.
Geology--Montana.
QE75 / .B9 no. 842
Metalliferous deposits of the greater Helena mining region, Montana, by J.T. Pardee and F.C. Schrader. - Washington, U.S. Govt. Print. Off., 1933. - xi, 318 p. illus., 47 pl. (part fold. incl. maps (3 in pocket) plans, diagrs. 23 cm. - U.S. Geological survey. Bulletin 842 .
gs 33000415
Ore deposits--Montana.
Geology--Montana.
QE75 / .B9 no. 842