| #11 | Air classics. -- Canoga Park : Challenge Publishing, 1963-. -- ISSN 0002-2241 |
| #12 | Air safety week. -- New York : Pace Publications, 1989-. -- ISSN 1044-727X |
| #13 | Air & space Europe. -- Paris : Elsevier, 1999-2001. -- ISSN 1290-0958 print. -- ISSN 1879-1921 online |
| #14 | Aircraft Engineering. -- London : Bunhill, 1929-1986. -- ISSN 0002-2667 |
| #15 | Aircraft engineering and aerospace technology. -- Bradford : MCB UP, 1986-. -- ISSN 1748-8842 print. -- ISSN 1758-4213 online |
| #16 | Annales d'astrophysique. -- Paris : Caisse nationale de la recherche scientifique, 1938-1968. -- ISSN 0365-0499 |
| #17 | Annual review of astronomy and astrophysics. -- Palo Alto : Annual Reviews, 1963-. -- ISSN 0066-4146 print. -- ISSN 1545-4282 online |
| #18 | Annual review of earth and planetary sciences. -- Palo Alto : Annual Reviews, 1973-. -- ISSN 0084-6597 print. -- ISSN 1545-4495 online |
| #19 | Astrofizika. -- Jerevan : Akademia nauk Armanskoj SSR, 1965-. -- ISSN 0571-7132 |
| #20 | Astronautica acta. -- New York : Pergamon Press, 1955-1973. -- ISSN 0004-6205 |