TY - BOOK AU - Kolm, Serge-Christophe TI - Reciprocity : an economics of social relations SN - 9780521882651 SN - 200703319 U1 - 302.1 KOL PY - 2008/// CY - Cambridge PB - Cambridge University Press KW - Altruism - Economic aspects KW - Economics N1 - Includes bibliographical references (p. 354-377) and index ER -