Now showing items 62-81 of 101
| Subject |
|---|
| Miami County Indiana [7] |
| Millstone grit [4] |
| Mineral springs [11] |
| Natural gas [30] |
| Ohio County Indiana [1] |
| Ohio River [15] |
| Oil and gas fields [32] |
| Paleozoic Geology [8] |
| Parke County Indiana [7] |
| Patoka River [13] |
| Perry County Indiana [2] |
| Petroleum [43] |
| Pike County Indiana [7] |
| Post-Tertiary series [1] |
| Quaternary Geology [2] |
| Red clay [3] |
| Sand [5] |
| Sandstone [18] |
| Shale [12] |
| Silicious limestone [2] |
Now showing items 62-81 of 101