00325nam a2200121Ia 4500008004100000082001500041100001700056245003200073260004000105300001000145630001800155650003000173211109s9999||||xx |||||||||||||| ||und||  a541bMAS-P  aMason, Brian 0aPrinciples of Geo Chemistry  bJohn Wiley and SonsaNew Yorkc1956  a276p.  xGeneral Stack  aSocial SciencexChemistry