The earth's crust its nature and physical properties edited by John G. Heacock - Washington, D. C. American Geophysical Union 1977 - xiii+754p. illus; index; refs - Geophysical Monograph; No. 20 . ISBN: 0-87590-020-8 Subjects--Topical Terms: Earth's CrustEarth-crust Universal Decimal Class. No.: 551.1/.16 / HEA