000 003020000a22001330004500
008 140223b1956 xxu||||| |||| 00| 0 eng d
041 _aENG
080 _aH23540.3 J6
082 _aH23540.3 J6
100 _aWills (L J)
245 _aCoacealed coalfields
260 _c1956
650 _aPetrology
999 _c156584
_d156584