How hungry is the selfish gene - Case, Anne.; Lin, I-Fen.; McLanahan, Sara. (Cambridge National Bureau of Economic Research, 1999)
Keywords: Adopted children -- Economic aspects -- United States; Adopted children -- Economic aspects -- South Africa; Foster children -- Economic aspects -- United States; Food consumption -- Economic aspects -- United States; Food consumption -- Economic aspects -- South Africa; Mother and child -- Economic aspects -- United States; Mother and child -- Economic aspects -- South Africa; Stepchildren -- Economic aspects -- United States