Books by Richard W. Ojakangas
Early Proterozoic Rocks of the
Early Proterozoic Rocks of the Great Lakes Region
Roadside geology of Minnesota
Middle Proterozoic to Cambrian rifting, central North America
Sedimentology and Provenance o
Sedimentology and Provenance of the Early Proterozoic Michigamme Formation and Goodrich Quartzite, Northern Michigan
Precambrian geology of the sou
Precambrian geology of the southern Canadian Shield and the eastern Baltic Shield
Schaum's outline of theory and problems of introductory geology
Minnesota's geology
Minnesota's geology, by Richard W. Ojakangas and Charles L. Matsch
Geology, sulfide mineralizatio
Geology, sulfide mineralization, and geochemistry of the Birchdale-Indus area, Koochiching County, northwestern Minnesota
The earth, past & present