Keller, A. (1972). J. Mayone Stycos. Ideology, faith and family planning in Latin America : studies in public and private opinion on fertility control. Nueva York, [N.Y.] : McGraw-Hill Book Company, 1971. 418 p. Estudios Demográficos Y Urbanos, 6(02), 269–271. https://doi.org/10.24201/edu.v6i02.183