Columbia subject headings:
Geology--Kansas--Periodicals.
Mines and mineral resources--Kansas--Periodicals.
Paleontology--Kansas--Periodicals.
Harvard subject headings:
Geology--Kansas
Mines and mineral resources--Kansas.
Paleontology--Kansas.
Princeton subject headings:
Geology--Kansas--Periodicals.
Mines and mineral resources--Kansas--Periodicals.
Paleontology--Kansas--Periodicals.