Lal, R. Sustainable management of soil resources in the humid tropics / by Rattan Lal. - Tokyo United Nations University Press, 1995 - xvii, 146p. : ill. ; pbk "UNUP-876"--T.p. verso. ISBN: 9280808761 Subjects--Topical Terms: Sustainable Management -- Humid Region.Soil Resources -- Management -- Humid Region LC Class. No.: S494.5.S86.L34 1995