00509nam a2200181 a 450000500170000002000150001708200130003210000160004524500480006126000480010930000270015769000100018469000130019496400220020799700130022999900170024295200680025920251203110300.0  a0521790301  a552bVER  aVernon, Ron  aBeneath our feetbthe rocks of planet earth  aCambridgebCambridge University Pressc2000  aviii,216p.c24cm.bHB.  aRocks  aMinerals  bENGcd552efg_  a101954 C  c84391d84391  00104070aPUbPUd2001-08-30g1127.53l0o552 VERp101954yBK