Buringh, P. Introduction to the study of soils in tropical and sub-tropical regions / by P. Buringh. - 2nd ed. - Wageningen : Centre for Agricultural Publishing and Documentation, 1970. - 99 p. : ill. (some col.) ; 24 cm. Includes bibliographies. ISBN: 9022003124 Subjects--Topical Terms: Soil science.Soils--Tropics.