Illustrative analysis : family structure and fertility /
John C. Caldwell, George Immerwahr, Lado T. Ruzicka.-
- London : World Fertility Survey, 1982.
- 64 p.
- Its : scientific reports ; no. 39 .
p. 54.
1. Fertility surveys 2. Fertility, Human - Analysis. 3. Family size surveys. World Fertility Survey.