TY - BOOK TI - Sustaining the soil: Indigenous soil and water conservation in Africa SN - 185383372x AV - S 494.5.S86 Sus PY - 1996/// CY - UK PB - Earthscan Publications Limited KW - Soil conservation KW - Water conservation KW - Africa KW - Agricultural conservation KW - Soil management KW - Soil productivity N1 - Includes bibliographical references and index ER -