Columbia subject headings:
Gas industry--Burma.
Gas industry--Philippines.
Gas industry--Southeast Asia.
Gas industry--Vietnam.
Harvard subject headings:
Gas industry--Burma.
Gas industry--Philippines.
Gas industry--Southeast Asia.
Gas industry--Vietnam.
Natural gas--Burma.
Natural gas--Philippines.
Natural gas--Vietnam.
Princeton subject headings:
Natural gas--Burma.
Natural gas--Philippines.
Natural gas--Vietnam.