| #251 | Amateur photographer. -- UNITED KINGDOM : Sutton, Surrey: IPC Business Press., 1945-. -- ISSN 0002-6840 |
| #252 | Amazing computing. -- Fall River : PiM Publications, 1986-1999. -- ISSN 0886-9480 |
| #253 | Ambio : Journal of the human environment. -- Oslo : Svenska vetenskapsakademien, 1972-. -- ISSN 0044-7447 print. -- ISSN 1654-7209 online |
| #254 | AMC journal. -- Washington : American Mining Congres, 1986-1994. -- ISSN 0891-6209 |
| #255 | American aviation. -- UNITED STATES : [Washington, D.C. : Ziff-Davis Pub. Co., -c1969], 1963-1969. -- ISSN 0096-4913 |
| #256 | American biotechnology laboratory. -- Shelton : International Scientific Communications, 1983-. -- ISSN 0749-3223 |
| #257 | American Ceramic Society bulletin. -- Easton : American Ceramic Society, 1946-. -- ISSN 0002-7812 print. -- ISSN 1945-2705 online |
| #258 | American cinematographer. -- UNITED STATES : [Hollywood, Calif., ASC Holding Corp.], 1920-. -- ISSN 0002-7928 |
| #259 | American documentation. -- UNITED STATES : Washington, D.C. : American Documentation Institute, [©1950]-, 1950-1969. -- ISSN 0096-946X |
| #260 | American dyestuff reporter. -- Secaucus : SAF International, 1917-2000. -- ISSN 0002-8266 |