| #271 | British chemical abstracts. A2, Organic chemistry. -- UNITED KINGDOM : London: Bureau of Chemical Abstracts, 1937. -- ISSN 0140-1475 |
| #272 | British chemical abstracts. B, Applied chemistry. -- UNITED KINGDOM : London: Bureau of Chemical Abstracts., 1926-1937. -- ISSN 0365-9291 |
| #273 | British Plastics Federation abstracts. -- UNITED KINGDOM : London : British Plastics Federation, 1945-1964. -- ISSN 0269-3372 |
| #274 | British plastics year book. -- UNITED KINGDOM : London : IPC Industrial Press, 1931-1972. -- ISSN 0261-104X |
| #275 | British polymer journal. -- UNITED KINGDOM : London : Society of Chemical Industry,, 1969-1990. -- ISSN 0007-1641 |
| #276 | Buletin ştiinţific - Institutul de Învăţământ Superior din Baia Mare. Seria B, Matematică, fizică-chimie, biologie-geologie. -- Rumunsko : Sinus Association, 1980 |
| #277 | Buletinul Academiei de științe a R.S.S. Moldova, Științe biologice și chimice. -- Chisinau : Akademiâ nauk Moldavskoj SSR, 1968-1991. -- ISSN 0568-5192 |
| #278 | Bulgaria oil & gas report. -- London : Business Monitor International, 2005-. -- ISSN 1748-3867 |
| #279 | Bulgaria petrochemicals report. -- London : Business Monitor International, 2005-. -- ISSN 1749-2173 |
| #280 | Bulgarian Chemical Communications. -- Sofia : Bulgarian Academy of Sciences, 1968-. -- ISSN 0861-9808 |