| #261 | Sealing technology. -- Kidlington : Elsevier Advanced Technology, 1994-. -- ISSN 1350-4789 print. -- ISSN 1879-100X online |
| #262 | Sedimentology. -- Oxford : Blackwell, 1962-. -- ISSN 0037-0746 print. -- ISSN 1365-3091 online |
| #263 | Separations technology. -- Amsterdam : Elsevier, 1990-1996. -- ISSN 0956-9618 print. -- ISSN 1873-3808 online |
| #264 | Separator's Digest : Das Magazin der Westfalia Separator AG, Firemní časopis [německá verze]. -- Oelde : GEA Westfalia Separator, 2000- |
| #265 | Separator's Digest : The magazine of GEA Westfalia Separator Group, Firemní časopis [anglická verze]. -- Oelde : GEA Westfalia Separator Group, 1999- |
| #266 | Silikáty. -- Praha : Academia, 1957-1989. -- ISSN 0037-5241 |
| #267 | Soap & cosmetics. -- Melvill : Soap & Cosmetics, 1999-2003. -- ISSN 1523-9225 |
| #268 | South Korea petrochemicals report. -- London : Business Monitor International, 2005-. -- ISSN 1749-2475 |
| #269 | Speciality chemicals. -- Nottingham : Royal Society of Chemistry, 1985-. -- ISSN 0267-5889 |
| #270 | STNews. -- Columbus : American Chemical Society, 1985-. -- ISSN 1040-1229 |