00365nam a2200109Ia 4500008004100000082001500041100002100056245005500077260003200132630001800164650007300182211109s9999||||xx |||||||||||||| ||und||  a525bSPE-I  aSpencer, Edgar W 0aIntroduction to the Structure of the Earth Science  bUnknown PublisheraNo Place  xGENERAL STACK  aSciencevAstronomy & allied sciencesxEarth (Astronomical geography)