na INLIS000000000033018 Ind 0010-1218014856 Program and abstracts: international workshop on biological management of soil fertility on acid upland soils in the humid tropics, July 28-31, 1997, Malang, Indonesia INTERNATIONAL WORKSHOP ON BIOLOGICAL MANAGEMENT OF SOIL FERTILITY ... (1997 : Malang) Brawijaya University Universitas Brawijaya Malang Brawijaya University 1997 v, 105 p. : ill. ; 29 cm. v, 105 p. : ill. ; 29 cm. Ref. 631.452INTp 631.452(211/213) SOIL FERTILITY ACID SOILS HUMID TROPICS 659/D/2000