Columbia subject headings:
Labor productivity--Soviet Union.
Labor supply--Soviet Union--Regional disparities.
Manpower policy--Soviet Union.
Soviets (Councils)
Harvard subject headings:
Labor productivity--Soviet Union.
Labor supply--Soviet Union--Regional disparities.
Labor supply--Soviet Union.
Manpower policy--Soviet Union
Soviets (Councils).
Princeton subject headings:
Labor supply--Soviet Union.
Manpower policy--Soviet Union.
Soviets (Councils)