Columbia subject headings:
Harvard subject headings:
Geology--Indiana
Geology--Kentucky--Jefferson County.
Paleontology--Indiana.
Paleontology--Kentucky--Jefferson County.
Princeton subject headings:
Conkin, James Elvin. Guide to the rocks and fossils of Jefferson County, Kentucky, southern Indiana and adjacent area--Indexes.
Geology--Indiana--Indexes.
Geology--Kentucky--Jefferson County--Indexes.