1. AAPG BULLETIN Monthly ISSN: 0149-1423 AMER ASSOC PETROLEUM GEOLOGIST, 1444 S BOULDER AVE, PO BOX 979, TULSA, USA, OK, 74119-3604 2. ABDOMINAL IMAGING Bimonthly ISSN: 0942-8925 SPRINGER, 233 SPRING STREET, NEW YORK, USA, NY, 10013 3. ABSTRACTS OF