00435nam a2200145Ia 4500 190328s9999||||xx |||||||||||||| ||und|| NITIL NITIL 21st 301.32 V886P Vogt, William People challenge to survival William Vogt London Victor Gollancz 1961 xiv, 257p. Human ecology; Fertility, Human; Peoples family; Birth control BKS 11739 11739 0 0 DDC 0 0 NITIL NITIL 2019-04-02 0 301.32 V886P 34675 2019-04-02 00:00:00 2019-04-02 BKS