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008 140223b1961 xxu||||| |||| 00| 0 eng d
041 _aENG
080 _aH235403 K1
082 _aH235403 K1
100 _aVan Krevelen (D W)
245 _aCoal
260 _aAmsterdum
_bElsvier
_c1961
650 _aPetrology
999 _c31947
_d31947