SerierOhio Department of Natural Resources, Division of Geological Survey Educational Leaflet
8 Værker
Popularitet 170,488 (3 Medlemmer)
11 Bøger
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| Flint, Ohio's Official Gemstone 1 eksemplar | No. 6 |
| Earthquakes in Ohio by Michael C Hansen 1 eksemplar | No. 9 |
| Geology in land-capability analysis by Michael L. Stieglitz 1 eksemplar | No. 10 |
| Guide to the geology along U.S. Route 23, between Columbus and Portsmouth by Michael C Hansen 2 eksemplarer | No. 11 |
| Clay and shale in Ohio by Douglas L. Crowell 1 eksemplar | No. 12 |
| Guide to Geology Along Interstate 75 Between Toledo and Cincinnati by Dennis N. Hull 1 eksemplar | No. 13 |
| Guide to the geology along interstate 70, Between Ohio-Indiana boundary and Columbus by Dennis N. Hull 1 eksemplar | No. 14 |
| Guide to the geology along Interstate 77, between Marietta and Cleveland (Educational leaflet) by Michael C Hansen 3 eksemplarer | 15 |