structure, functioning and management Goodall, D. W. Perry, R. A. text London Cambridge University Press c1981 monographic v-- edited by D. W. Goodall, R. A. Perry, ; with the assistance of K. M. W. Howes. includes bibliographical references and index Arid-land Ecosystems QH541.5.D4 .A74 052122988X 000 20150407124510.0