00325nam a2200121Ia 450000500170000000800410001702000150005805000180007310000150009124500500010626000330015665000140018920251229084934.0251229s9999    xx            000 0 und d  a8123909845  aQE 431.2 .B4   aBest Myron 0aIgneous and metamorphic petrologycMyron Best  aShahdra Delhib CBS Pub 1986  aPetrology