| #491 | The ARRL handbook for the radio amateur. -- Newington : American Radio Relay League, 1985-2002. -- ISSN 0890-3565 |
| #492 | Art & Antiques. -- Praha : Ambit Media, 2002-. -- ISSN 1213-8398 |
| #493 | Art & design. -- London : Architectural Design, 1985-. -- ISSN 0267-3991 |
| #494 | Art et décoration. -- Paris : Librairie centrale des Beaux Arts, 1897-. -- ISSN 0004-3168 |
| #495 | Artificial intelligence. -- Amsterdam : North-Holland, 1970-. -- ISSN 0004-3702 print. -- ISSN 1872-7921 online |
| #496 | Artificial intelligence in engineering. -- Southampton : Computational Mechanics, 1989-2001. -- ISSN 0954-1810 print. -- ISSN 1879-1492 online |
| #497 | AS/400. -- Rochester : International Business Machines, 1993-. -- ISSN 1074-7052 |
| #498 | AS/400 systems management. -- Arlington Heights : Adams/Hunter, 1995-1999. -- ISSN 1086-881X |
| #499 | ASB. -- Praha : Jaga Media, 2004-. -- ISSN 1214-7486 |
| #500 | ASCE annual combined index. -- New York : Information Services, ASCE, 1982-2000. -- ISSN 0742-1753 |