Ukrainian Mathematical Journal Kluwer Ultramicroscopy North-Holland Ultrasonic Imaging Academic Press On Line Ultrasonics Elsevier Ultrasonics Sonochemistry Elsevier Ultrasound in Medicine & Biology Elsevier Ultrasound in Obstetrics and Gynecology Wiley-Blackwell UNASYLVA (JOURNAL) - vol: 1966-; Volcani Hardcopy Unfallchirurg, Der Springer UNITED STATES FISH AND WILDLIFE SERVICE. TECHNICAL PAPERS (JOURNAL) - vol: 1962-1983; Volcani Hardcopy Universal Access in the Information Society Springer Urban Ecosystems Kluwer Urban Review, The Kluwer Urban Water Elsevier Urgences Medicales Science Direct Urologe A, Der Springer Urologe B, Der Springer Urologic Oncology Elsevier Urological Research Springer Urology Elsevier User Modeling and User-Adapted Interaction Kluwer Utilities Policy ScienceDirect Uwf - UmweltWirtschaftsForum Springer