Sreivastava, J.P. Conserving soil moisture and fertility in the warm seasonally dry tropics / J.P. Sreivastava - Washington : The World Bank , 1993 - 81p. : ill. ; 27 cm. - Technical Paper No. 221 . Includes bibliographical references and index. Subjects--Topical Terms: SoilsSocial conservationSoil fertility Gov. Doc. Class. No.: UN WB TP-221