R. Ojakangas · Richard O. · Richard Ojakangas · Richard W.
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Basement Tectonics 10 | 978-0-7923-3429-3 | 1995 | Albert B. Dickas · John C. Green |
| Earth, Past and Present | 978-0-07-047676-9 | 1976 | |
| Minnesota's Geology | 978-0-8166-0953-6 | 1982 | Charles L. Matsch |
| Roadside Geology of Minnesota | 978-0-87842-562-4 | 2009 | |
| Schaum's Outline of Theory and Problems of Introductory Geology | 978-0-07-047704-9 | 1990 | |
| Sedimentology and Provenance of the Early Proterozoic Michigamme Formation and Goodrich Quartzite, Northern Michigan: Regional Stratigraphic | 978-99937-0-893-3 | 1994 | |
McGraw-Hill · Mountain Press · Springer · Univ Of Minnesota Press