Bridges, E. M. World soils [by] E. M. Bridges. - London, Cambridge U.P., 1970. - [1], 89 p., 8 plates. illus. (some col.), maps. 25 cm. Bibliography: p. 85-86. ISBN: 0521497779 Subjects--Topical Terms: Soil science. LC Class. No.: S 591 591 Bri