000 00261nam a22001097a 4500
999 _c338646
_d338646
020 _a8123910320
082 _a552
_bEHL.P
100 _aErnest G.Ehlers
245 _aPetrology
_bIgneous,Sedimentary,and Metamorphic
260 _aNewDelhi
_bCBS
_c1987
942 _cBK