| #21 | Appliance manufacturer. -- Troy : Business News, 1953-2004. -- ISSN 0003-679X |
| #22 | Applied physics letters. -- New York : American Institute of Physics, 1962-. -- ISSN 0003-6951 print. -- ISSN 1077-3118 online |
| #23 | Applied scientific research : An international journal of the appllications of fluid dynamics. -- Dordrecht : Kluwer Academic Publishers, 1966-1998. -- ISSN 0003-6994 |
| #24 | ARGOS spine news. -- Paris : ARGOS, 2000-2007. -- ISSN 1774-6701 |
| #25 | Argospine news & journal. -- Strasbourg ; Paris : Argospine association, 2008-. -- ISSN 1957-7729 print. -- ISSN 1957-7737 online |
| #26 | ASEE prism. -- Washington : American Society for Engineering Education, 1991-. -- ISSN 1056-8077 print. -- ISSN 1930-6148 online |
| #27 | Asia Europe journal : intercultural studies in the social sciences and humanities. -- Berlin : Springer, 2003-2006. -- ISSN 1610-2932 print. -- ISSN 1612-1031 online |
| #28 | Aslib book list : A monthly list of selected books published in the fields of science, technology, medicine and the social sciences. -- London : Aslib, 1935-. -- ISSN 0001-2521 |
| #29 | Assembly. -- Carol Stream : Hitchcock, 1990-. -- ISSN 1050-8171 |
| #30 | AT & T Bell Laboratories technical journal. -- New York : AT&T, 1984. -- ISSN 0748-612X print. -- ISSN 2376-7162 online |