Altruism, morality, and economic theory / edited by Edmund S. Phelps. Phelps, Edmund S. Russell Sage Foundation. Economics Congresses. Social ethics Congresses. 171.8 PHA Based on the proceedings of a conference held March 3-4, 1972, sponsored by the Russell Sage Foundation. Includes index. New York : Russell Sage Foundation, 1975. 1975. 1975 Text ix, 232 p. : eng