Columbia subject headings:
Geology--Turkey--Periodicals.
Geology--Turkey.
Mines and mineral resources--Turkey--Periodicals.
Mines and mineral resources--Turkey.
Paleontology--Turkey--Periodicals.
Harvard subject headings:
Geology--Turkey--Periodicals.
Mineral industries--Finance--Periodicals.
Mineral industries--Turkey--Periodicals.
Mines and mineral resources--Turkey--Periodicals.
Paleontology--Turkey--Periodicals.
Princeton subject headings:
Geology--Turkey--Periodicals.
Geology--Turkey.
Mines and mineral resources--Turkey--Periodicals.
Mines and mineral resources--Turkey.
Paleontology--Turkey--Periodicals.