A geological reconnaissance in northern Idaho and northwestern Montana /
Calkins, Frank C.
A geological reconnaissance in northern Idaho and northwestern Montana / by F.C. Calkins. With notes on the economic geology, by D.F. MacDonald. - Washington, Govt. Print. Off., 1909. - 112 p. : ill., fold. map ; 24 cm. - U.S. Geological survey. Bulletin 384 . - United States. Geological Survey. Bulletin ; 384. .
Includes index.
gs 09000249
Geology--Idaho.
Geology--Montana.
QE75 / .B9 no. 384
A geological reconnaissance in northern Idaho and northwestern Montana / by F.C. Calkins. With notes on the economic geology, by D.F. MacDonald. - Washington, Govt. Print. Off., 1909. - 112 p. : ill., fold. map ; 24 cm. - U.S. Geological survey. Bulletin 384 . - United States. Geological Survey. Bulletin ; 384. .
Includes index.
gs 09000249
Geology--Idaho.
Geology--Montana.
QE75 / .B9 no. 384