TY - BOOK T1 - A gravity survey of Marine Field :case study for Silurian reef exploration / DA - 1989. CY - Champaign, Ill. : AU - Heigold, Paul C. AU - Whitaker, Stephen T. VL - 133 CN - TN872.I3 CN - TN872.I3 PB - Illinois State Geological Survey, PP - Champaign, Ill. : PY - 1989. ID - 155030 KW - Petroleum KW - Gravity anomalies TI - A gravity survey of Marine Field :case study for Silurian reef exploration / ER -