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edited by Richard W. Ojakangas, Albert B. Dickas, and John C. Green
Geological Society of America 1997 Special paper / Geological Society of America 312
Available at 6 libraries
Kluwer Academic Publishers c1995 Proceedings of the International Conferences on Basement Tectonics v. 4
Available at 2 libraries
R.W.オジャカンガス,D.G.ダービー著 ; 堀福太郎訳
サイエンス社 1979.1 サイエンス叢書 N-5
Available at 139 libraries
geology compiled by D.L. Southwick and R.W. Ojakangas
University of Minnesota, Minnesota Geological Survey [1979]
Cartographic Material (Map)
geology by R.W. Ojakangas, John H. Mossler and G.B. Morey
by R.W. Ojakangas and P.K. Sims
Minnesota Geological Survey, University of Minnesota 1977 Miscellaneous map series / Minnesota Geological Survey M-17
Richard W. Ojakangas, David G. Darby
McGraw-Hill c1976 McGraw-Hill earth science paperback series
Available at 7 libraries
by S. Viswanathan and R.W. Ojakangas
Minnesota Geological Survey, University of Minnesota 1974 Miscellaneous map series / Minnesota Geological Survey M-22
Minnesota Geological Survey, University of Minnesota 1974 Miscellaneous map series / Minnesota Geological Survey M-20