@BOOK{NAP784, author = "National Research Council", title = "Socioeconomic Determinants of Fertility Behavior in Developing Nations: Theory and Initial Results", doi = "10.17226/784", url = "https://nap.nationalacademies.org/catalog/784/socioeconomic-determinants-of-fertility-behavior-in-developing-nations-theory-and", year = 1982, publisher = "The National Academies Press", address = "Washington, DC" }