00299nam a2200109 a 450000500170000002000150001708200190003210000260005124500520007726000400012930000200016920251203091902.0  a8120308476  a551.2,bD, phi  aPhilpotts, Anthony R.  aPrinciples of igneous and metamorphic petrology  aDelhibPrentice-Hall of Indiac1994  axii, 498p, 26cm