00501nam a2200169Ia 4500 304.6309045 Un58.LT United Nations, Economic and Social Affairs, Department of- Levels and trends of fertility throughout the World, 1950-1970 New York United Nations 1977 xiii, 361p. Tables, Corrigendum Population Studies, United Nations no. 59 0 0 0 0 ISI ISI 1998-05-27 0 304.6309045 Un58.LT DP16307 2019-02-14 00:00:00 2019-02-14 BK 306 306 306