1. International Primatological Society, Fourth meeting Fourth meeting, Appeal for the conservation of nonhuman primates, Portland, Oregon (1972).
2. de Avila-Pires, F. D., Int. Zoo Yearbook, 12, 13 (1972).
3. Harrisson, B., Conservation of nonhuman primates in 1970 (Karger, Basel, 1971).
4. Southwick, C. H., Siddiqi, M. R., and Siddiqi, M. F., Science, 170, 1051 (1970).
5. Survival Service Commission, Red Data Book (International Union for the Conservation of Nature, Morges, 1972).