@book{ BA06244045,
  author    = "Schultz, Theodore William and National Bureau of Economic Research and Population Council",
  title     = "Economics of the family : marriage, children, and human capital : a conference report of the National Bureau of Economic Research",
  publisher = "Published for the National Bureau of Economic Research by the University of Chicago Press",
  year      = "1974",
  URL       = "https://ci.nii.ac.jp/ncid/BA06244045"
}