| 其他書名 | An Interpretation Based on Regional Geophysics and the Results of Test-drilling ; by D.L. Southwick and G.B. Morey ; The Penokean Orogency in Minnesota and Upper Michigan : a Comparison of Structural Geology |
| 出版 | U.S. Government Printing Office, 1991 |
| URL | http://books.google.com.hk/books?id=9MegwQEACAAJ&hl=&source=gbs_api |