Replenishing soil fertility in Africa Roland J. Buresh Buresh, R. J. Sánchez, Pedro A., 1940- Calhoun, Frank Gilbert, 1939- American Society of Agronomy. Division A-6. American Society of Agronomy. Division S-2. International Centre for Research in Agroforestry. American Society of Agronomy. Meeting (88th : 1996 : Indianapolis, Ind.) Soil Science Society of America. Meeting (88th : 1996 : Indianapolis, Ind.) Soil fertility Africa Congresses. Soil management Africa Congresses. S599.5.A1 R46 1997 631.422096 REP Includes bibliographical references. Wisconsin : Soil Science Society of America , American Society of Agronomy, 1997. 1997. 1997 Text xix, 251 p. : eng SSSA special publication ; no. 51 Africa Africa