Columbia subject headings:
Manpower--Soviet Union--Statistics.
Manpower--United States--Statistics.
Soviet Union--Population--Statistics.
United States--Population--Statistics.
Harvard subject headings:
Manpower--Soviet Union--Statistics.
Manpower--United States--Statistics.
Soviet Union--Population--Statistics.
United States--Population--Statistics.
Princeton subject headings:
Manpower--Soviet Union--Statistics.
Manpower--United States--Statistics.
Soviet Union--Population--Statistics.
Statistics.
United States--Population--Statistics.