Population growth, shifting cultivation, and unsustainable agricultural development : a case study in Madagascar / Andrew Keck, Narendra P. Sharma, Gershon Feder. Keck, Andrew. Feder, Gershon. Sharma, Narendra P. Agriculture Economic aspects Madagascar. 338.9691 KEP Includes bibliographical references. Washington, D.C. : World Bank, c1994. c1994. 1994 Text xii, 63 p. : eng World Bank discussion papers, 0259-210X ; 234. Africa Technical Department series World Bank discussion papers. Africa Technical Department series. World Bank discussion papers ; 234. Madagascar Economic conditions. Madagascar Population. Madagascar.