| #1241 | System. -- Brno : CCB, 1999. -- ISSN 1212-4567 |
| #1242 | Systémová integrace. -- Praha : Česká společnost pro systémovou integraci, 1994-. -- ISSN 1210-9479 print. -- ISSN 1804-2716 online |
| #1243 | Systémové inženýrství. -- Czech Republic : Praha : Ústředí pro rozvoj automatizace a výpočetní techniky, 1969 Dobrá u Frýdku-Místku : Výzkumný ústav hutnictví žel, 1969-1980. -- ISSN 0139-8342 |
| #1244 | Systems Biology. -- Stevenage : Institution of Electrical Engineers, 2004-2006. -- ISSN 1741-2471 print. -- ISSN 1741-248X online |
| #1245 | Systems contractor news. -- New York : PSN Publications, 1994-. -- ISSN 1078-4993 |
| #1246 | Systems integration. -- United States : Newton : Cahners Publishing, 1989-1992. -- ISSN 1044-4262 |
| #1247 | Systems integration business. -- Newton : Cahners Pub. Associates, 1992-. -- ISSN 1063-407X |
| #1248 | Systems research and behavioral science. -- Malden : John Wiley & Sons, 1997-. -- ISSN 1092-7026 print. -- ISSN 1099-1743 online |
| #1249 | Systems technology. -- United Kingdom : Ilford : Plessey Company, 1967 Ilford : Plessey Telecommunications, 1967-1984. -- ISSN 0039-8047 |
| #1250 | Systems 3X/400 : Strategic infomration for managers of IBM midrange computers. -- Des Plaines : Hunter Publishing Limited Partnership, 1991-. -- ISSN 1055-7768 |