2012 - Supercooperators Altruism Evolution and Why We Need Each Other to Succeed (Paperback) ISBN-13: 9781451626636 ISBN-10: 1451626630 Genres: Science & Math, Politics & Social Sciences ? 2011 - Supercooperators Why We Need Each Other to Succeed (Hardcover) ISBN-13: 9781439100189 ISBN-10: 1439100187 ? |