000			00268nam a2200097 4500
999			_c336246 _d336246
082			_a553.282 _bTIS P
100			_aTissot,B.P. and Welte,D.H.
245			_aPetroleum Formation and Occurrence _cTissot,B.P. and Welte,D.H.
260			_aBerlin _c1984 _bSpringer
942			_cBK