00530nam a2200181Ia 4500003000900000008004100009040001600050080001600066100002400082245008000106260003200186300001300218500002700231650004100258650001600299650001800315650001500333IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a550.34bRIC  aRichter, Charles F. 0aElementary seismologycC. F. Richter                                         aLondonbW. H. Freemanc1958  aviii,768  aIncludes bibliography.  aAstronomy and Astrophysics Thesaurus  aEarthquakes  aElastic waves  aSeismology