Columbia subject headings:
Families--Soviet Union--Mathematical models.
Family size--Soviet Union--Mathematical models.
Fertility, Human--Soviet Union--Mathematical models.
Harvard subject headings:
Families--Soviet Union--Mathematical models.
Family size--Soviet Union--Mathematical models.
Fertility, Human--Soviet Union--Mathematical models.
Princeton subject headings:
Families--Soviet Union.
Family size--Soviet Union.
Fertility, Human--Soviet Union.
Soviet Union--Population.