M.J. Swift (ed) The biology and fertility of tropical soils: Report of the tropical soil biology and fertility programme TSBF 1996 - Nairobi, Kenya UNESCO 1996 - 48p Colored illustrations ISBN: 9966989234 Subjects--Topical Terms: soil fertility --tropicsSoil fertility--Periodicals--tropics LC Class. No.: S 599.9 / .B56 1996