Bridges, E. M. (Edwin Michael) World soils / [by] E.M. Bridges. - London : Cambridge U.P., 1970. Bibliography: p. 85-86. ISBN: 0521076161 15/- LCCN: 76096082 //r84 Nat. Bib. No.: B70-24616 Subjects--Topical Terms: Soil science. LC Class. No.: S591 / .B85 Dewey Class. No.: 631.4