Search results
Appearance
The pages "Illinois Geological Survey, Report of Investigations" and '"Illinois Geological Survey, Report of Investigations"' do not exist. You can create a draft and submit it for review or request that a redirect be created, but consider checking the search result below to see whether the topic is already covered.
- Pennsylvanian strata of the eastern Interior Basin" (PDF). Illinois Geological Survey, Report of Investigations. 21: 1–43. Archived from the original (PDF) on August...308 KB (14,598 words) - 09:42, 7 September 2024