00288nam a2200109 a 450000500170000002000150001708200130003210000460004524500290009126000380012030000200015820251203091655.0  a8185392528  a549bBLA  aBlackburn, William H., Dennen, William H.  aPrinciples of mineralogy  aDelhibUniversal book Stallc1988  axvi, 414p, 26cm