00491nam a2200169 a 450000500170000002000150001708200190003210000180005124500220006926000480009130000260013969000190016596400190018499700180020399900170022195200830023820251203091823.0  a0582301742  a552.1,bD, hal  aHall, Anthony  aIgneous petrology  aEssexbLongman Scientific & technicalc1987  avii,573p.c23 cm.bPB  aRocks, Igneous  bengcdefg_  a80502 LIBSC C  c53879d53879  00104070aPUbPUd1998-04-08g28.99l0o552.1, D, halp80502q2023-12-31yBK