Draper, W. H., Jr. The challenge we must meet.
Wilson, T. W., Jr. Environment and population.
Grant, J. P. and Rich, W. Development, social justice, and smaller families.
Brown, L. R. Population and affluence: growing pressures on world food resources.
Barnes, A. C. Research needs and challenges in the population field.
Henderson, J. The family planning movement and population control.
Kieffer, J. A. U.S. population assistance to the developing countries.
Salas, R. M. World population year: the need for international consensus.
Reading references (p. 93-94)
