[1]
Porras Macías, A. 1972. Gerald I. Zatuchni, Comp., Post-partum Family Planning, Nueva York, McGraw-Hill Book Company, 1970, 477 p. Estudios Demográficos y Urbanos. 6, 02 (may 1972), 271–272. DOI:https://doi.org/10.24201/edu.v6i02.184.