Columbia subject headings:
Gas fields--South Asia--Maps.
Geology--South Asia--Maps.
Maps.
Oil fields--South Asia--Maps.
Harvard subject headings:
Gas fields--South Asia--Maps.
Geology--South Asia--Maps.
Oil fields--South Asia--Maps.
South Asia--Maps
Princeton subject headings:
Gas fields--South Asia--Maps.
Geology--South Asia--Maps.
Maps.
Oil fields--South Asia--Maps.