1. Fruits of philosophy: a treatise on the population question Author(s): Knowlton, Charles, 1800-1850, author Publication: [New York?] : Garden City Publishing Company, [1880?] Subject(s): Contraception
2. The law of population its consequences and its bearing upon human conduct and morals Author(s): Besant, Annie, 1847-1933 Publication: San Francisco : The Readers' Library, May, 1893 Subject(s): Population ControlPopulation GrowthContraception
