Ecology, economics, ethics : the broken circle / edited by F. Herbert Bormann, Stephen R. Kellert. Bormann, F. Herbert, 1922-2012. Kellert, Stephen R. Ecology. Environmental ethics. QH541 .E31934 1991 179.1 ECO Includes bibliographical references (p. 211-224) and index. New Haven : Yale University Press, c1991. c1991. 1991 Text xviii, 233 p. : eng