| #1261 | Systems technology. -- United Kingdom : Ilford : Plessey Company, 1967 Ilford : Plessey Telecommunications, 1967-1984. -- ISSN 0039-8047 |
| #1262 | Systems 3X/400 : Strategic infomration for managers of IBM midrange computers. -- Des Plaines : Hunter Publishing Limited Partnership, 1991-. -- ISSN 1055-7768 |
| #1263 | Tech Magazine. -- Praha : Ikotech, 2008-. -- ISSN 1803-1609 |
| #1264 | Technische Rundschau. -- Německo : Leipzig : Baumgärtners Buchhandlung, 1887-1888 |
| #1265 | Telecommunications. -- Norwood : Horizon House Publications, 1981-2001. -- ISSN 0278-4831 |
| #1266 | Telekomunikační zpravodaj. -- Praha : Testcom, 1996-2004. -- ISSN 1211-2712 |
| #1267 | Telematics and informatics. -- Oxford : Pergamon Journal, 1984-. -- ISSN 0736-5853 print. -- ISSN 1879-324X online |
| #1268 | Telnet : Magazín pro globální komunikaci. -- Praha : Panorama Publishing, 1996-. -- ISSN 1211-5851 |
| #1269 | Teorija konečnych avtomatov i jeje priloženija. -- Riga : Zinatne, 1973-1983. -- ISSN 0320-6718 |
| #1270 | Testing, instruments and controls. -- Australie : Sydney : Non-Destructive Testing Association of Australia, 1965-1975. -- ISSN 0040-3997 |