TY - BOOK AU - M.J. Swift (ed) TI - The biology and fertility of tropical soils: Report of the tropical soil biology and fertility programme TSBF 1996 SN - 9966989234 AV - S 599.9 .B56 1996 PY - 1996/// CY - Nairobi, Kenya PB - UNESCO KW - soil fertility KW - tropics KW - Soil fertility KW - Periodicals ER -