共 50 条
- [5] PERMIAN AND TRIASSIC BOUNDARY OF SOUTHWESTERN UTAH AAPG BULLETIN-AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS, 1981, 65 (05): : 965 - 965
- [10] CHEMICAL SEQUENCE OF MICROSPHERULES AT THE PERMIAN TRIASSIC BOUNDARY METEORITICS, 1990, 25 (04): : 423 - 423