00345nam a2200121 a 450000500170000002000150001708200190003210000060005111000180005724501010007526000280017630000190020420251203110135.0  a0080424198  a622b18282 HEL  d_  aHelbig, Klaus  aModeling the earth for oil explorationbfinal report of the CEC's geoscience I program 1990-1993  aOxforrdbElsevierc1994  axx,795p.c22cm