Minnesota.  Preliminary bedrock geologic map of the International Falls 1 [degree] by 2 [degrees] Quadrangle, Minnesota, U.S.A. and Ontario, Canada, compiled by W.C. Day [and others]   Scale: 1:250,000 (1"=about 4 miles)
Contributors: Day, W.C.
Publisher: U.S. Geological Survey
Place of publication: Denver
Language: eng
Subjects: Geology - Minnesota
Notes: 11