共 50 条
- [31] POSSIBLE LATE MIDDLE ORDOVICIAN ORGANIC-CARBON ISOTOPE EXCURSION - EVIDENCE FROM ORDOVICIAN OILS AND HYDROCARBON SOURCE ROCKS, MIDCONTINENT AND EAST-CENTRAL UNITED-STATES AAPG BULLETIN-AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS, 1987, 71 (11): : 1342 - 1354