| #1251 | Systems integration business. -- Newton : Cahners Pub. Associates, 1992-. -- ISSN 1063-407X |
| #1252 | Systems research and behavioral science. -- Malden : John Wiley & Sons, 1997-. -- ISSN 1092-7026 print. -- ISSN 1099-1743 online |
| #1253 | Systems technology. -- United Kingdom : Ilford : Plessey Company, 1967 Ilford : Plessey Telecommunications, 1967-1984. -- ISSN 0039-8047 |
| #1254 | Systems 3X/400 : Strategic infomration for managers of IBM midrange computers. -- Des Plaines : Hunter Publishing Limited Partnership, 1991-. -- ISSN 1055-7768 |
| #1255 | Tech Magazine. -- Praha : Ikotech, 2008-. -- ISSN 1803-1609 |
| #1256 | Technische Rundschau. -- Německo : Leipzig : Baumgärtners Buchhandlung, 1887-1888 |
| #1257 | Telecommunications. -- Norwood : Horizon House Publications, 1981-2001. -- ISSN 0278-4831 |
| #1258 | Telekomunikační zpravodaj. -- Praha : Testcom, 1996-2004. -- ISSN 1211-2712 |
| #1259 | Telematics and informatics. -- Oxford : Pergamon Journal, 1984-. -- ISSN 0736-5853 print. -- ISSN 1879-324X online |
| #1260 | Telnet : Magazín pro globální komunikaci. -- Praha : Panorama Publishing, 1996-. -- ISSN 1211-5851 |