| #1291 | Unesco journal of information science, librarianship and archives administration. -- Francie : Paris : Unesco, 1979-. -- ISSN 0379-122X |
| #1292 | Universal access in the information society. -- Berlin : Springer, 2001-. -- ISSN 1615-5289 print. -- ISSN 1615-5297 online |
| #1293 | UNIX & open systems service, Edice: Information technology solutions. -- Delran : Datapro Information Services Group, 1991-. -- ISSN 1083-1851 |
| #1294 | UNIX review : The magazine of advanced operating environments. -- San Francisco : Miller Freeman, 1983-1998. -- ISSN 0742-3136 |
| #1295 | UNIX review's performance computing. -- San Francisco : Miller Freeman, 1998-1999. -- ISSN 1098-7150 |
| #1296 | UNIXworld : Mcgraw-Hill’s Magazine of Open Systems Computing. -- San Mateo, CA : McGraw-Hill, 1984-1996. -- ISSN 0739-5922 |
| #1297 | UnixWorld's open computing. -- Kalifornie - Spojené státy americké : San Mateo : McGraw Hill, 1994-. -- ISSN 1072-4044 |
| #1298 | Upgrade IT! : Měsíčník o ICT pro firemní řešení. -- Brno : Thomas Taylor, 2005-. -- ISSN 1801-5026 |
| #1299 | Upravljajuščije sistemy i mašiny. -- Kyjiv : Naukova Dumka, 1972-. -- ISSN 0130-5395 |
| #1300 | Urban systems. -- New York : Pergamon, 1977-1979. -- ISSN 0147-8001 print. -- ISSN 1878-3953 online |