01035nam a2200217Ia 4500 CTU_122471 210402s9999 xx 000 0 und d 631.4 B952 Buresh, Roland J. Replenishing soil fertility in Africa : proceedings of an international sysmposium cosponsored by Divisions A-6 (International Agronomy) and S-4 (Soil Fertility and Plant Nutrition), and the International Center for Research in Agroforestry, held at the 88th Annual Meetings of the American Society of Agronomy and the Soil Science Society of America, Indianapolis, Indiana, 6 November 1996 Editors Roland J. Buresh, Pedro A. Sanchez, Frank Calhoun Madison, Wis. Soil Science Society of America 1997 Soil fertility,Soil management,Agriculture,Nông nghiệp Congresses,Congresses Africa,Africa,Africa Hiếu Trung tâm Học liệu Trường Đại học Cần Thơ