Population crisis : hearings before the Subcommittee on Foreign Aid Expenditures of the Committee on Government Operations, United States Senate : ninetieth Congress, second session on S. 1676 ; a bill to reorganize the Department of State and the Department of Health, Education, and Welfare, January 31, 1968

World population crisis : the United States response

Piotrow, Phyllis Tilson, (1973)

Population, environment, and people

Hinrichs, Noe͏̈l, (1971)

The American population debate : [How critical is the population problem? Will free choice work? Should birth limitation be legally enforced? Does population influence ecology? all these and many other questions are aired in this battle between the experts]

Callahan, Daniel, (1971)