00564nam a2200181Ia 4500003000900000008004100009020001900050040001600069080001300085245011800098260003100216300001000247650004100257650001200298700002100310700002500331700002600356IN-BaIIA211028s9999    xx            000 0 eng d  a0-262-0-7040-7  cIIA Library  a550bGAS 0aUnderstanding the Earthba reader in the earth sciencescedited by I. G. Gass, Peter J. Smith and R. C. L. Wilson  aCambridgebMIT Pressc1971  a353p.  aAstronomy and Astrophysics Thesaurus  aGeology  aGass, I. G., ed.  aSmith, Peter J., ed.  aWilson, R. C. L., ed.