Columbia subject headings:
Harvard subject headings:
Geology--Africa
Geology--Asia
Geology--Colonies--Great Britain.
Mines and mineral resources--Africa
Mines and mineral resources--Asia.
Mines and mineral resources--Colonies--Great Britain.
Princeton subject headings:
Geology--Africa--Periodicals.
Geology--Asia--Periodicals.
Mines and mineral resources--Africa--Periodicals.
Mines and mineral resources--Asia--Periodicals.
Mines and mineral resources--Great Britain--Colonies.
Periodicals.