000 003270000a22001450004500
008 140223b1986 xxu||||| |||| 00| 0 eng d
041 _aENG
080 _aH2331 M6
082 _aH2331 M6
100 _aBennett (R H)
700 _aHulbert (M H)
245 _aClay microstructure
260 _c1986
650 _aPetrology
999 _c156554
_d156554