The Behavior of Mothers as Inputs to Child Health: The Determinants of Birth Weight, Gestation, and Rate of Fetal Growth

T. Paul Schultz, Economic Aspects of Health (University of Chicago Press, 1982), chap. 2, https://www.nber.org/books-and-chapters/economic-aspects-health/behavior-mothers-inputs-child-health-determinants-birth-weight-gestation-and-rate-fetal-growth.