Links
- Anthropological Developments Post
- Carnegie Museum of Natural History
- Cleveland Museum of Natural History
- Electronic Field Trip to the Falls of the Ohio
- KET Education
- Falls of the Ohio State Park Virtual Tour
- Rock Pages
- University of Minnesota
- Mineral Pages
- University of Minnesota
- See under DropMark Notebook (Link Above)
- Title
- Publication, 0000.
Bold indicates books out of print.
Italicized indicates online/downloadable copy.
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