economic case studies Dixon, John A. 1946- James, D. E. (David Edward) 1942- Sherman, Paul B. text London Earthscan Publications 1990 monographic xxi, 364 p. : ill., maps ; 22 cm. edited by John A. Dixon, David E. James, Paul B. Sherman. Includes bibliographical references and index. Arid regions agriculture Economic aspects Case studies HD1580 .D79 1990 333.73/6 1853830542 : 90182212 UOEL 000 20150617121516.0 4842862