Mineral resources of Minnesota

MLA

Grout, Frank F. and William H. Emmons. Mineral resources of Minnesota. Minneapolis : University of Minnesota Press, 1943.

APA

Grout, F. & Emmons, W. (1943). Mineral resources of Minnesota. Minneapolis : University of Minnesota Press.

Chicago

Grout, Frank F. and William H. Emmons. Mineral resources of Minnesota. Minneapolis : University of Minnesota Press, 1943.