| #21 | Applied categorical structures. -- Dordrecht : Kluwer Academic Publishers, 1993-. -- ISSN 0927-2852 print. -- ISSN 1572-9095 online |
| #22 | Applied mechanics reviews : An International Review Journal in the Engineering Science. -- New York : American Society of Mechanical Engineers, 1948-. -- ISSN 0003-6900 |
| #23 | Applied optics. -- Easton : Optical Society of America, 1962-1989. -- ISSN 0003-6935 |
| #24 | Applied optics, Information processing. -- Washington : Optical Society of America, 1990-2003. -- ISSN 1540-8973 |
| #25 | Applied optics. -- Washington : Optical Society of America, 1962-. -- ISSN 1559-128X print. -- ISSN 2155-3165 online |
| #26 | Applied physics letters. -- New York : American Institute of Physics, 1962-. -- ISSN 0003-6951 print. -- ISSN 1077-3118 online |
| #27 | Applied surface science : A journal devoted to applied physics and chemistry of surfaces and interfaces. -- Amsterdam : North-Holland, 1985-. -- ISSN 0169-4332 print. -- ISSN 1873-5584 online |
| #28 | Archiv für das Eisenhüttenwesen. -- Düsseldorf : Verein Deutscher Eisenhüttenleute und Max Planck-Institut für Eisenforschung, 1927-1984. -- ISSN 0003-8962 |
| #29 | Archive for rational mechanics and analysis. -- Berlin : Springer, 1957-. -- ISSN 0003-9527 print. -- ISSN 1432-0673 online |
| #30 | Archivum mathematicum. -- Brno : Přírodovědecká fakulta Masarykovy university v Brně, 1965-. -- ISSN 0044-8753 |