Columbia subject headings:
Labor movement--Papua New Guinea--Statistics--Periodicals.
Papua New Guinea--Occupations--Statistics--Periodicals.
Wages--Papua New Guinea--Statistics--Periodicals.
Harvard subject headings:
Labor supply--Papua New Guinea--Statistics--Periodicals.
Occupations--Papua New Guinea--Statistics--Periodicals.
Wages--Papua New Guinea--Statistics--Periodicals.
Princeton subject headings: