| #551 | Australian paediatric journal. -- Melbourne : Australian Paediatric Association, 1965-1989. -- ISSN 0004-993X |
| #552 | Autoimmunity reviews. -- Amsterdam : Elsevier, 2002-. -- ISSN 1568-9972 print. -- ISSN 1873-0183 online |
| #553 | Autonomic & autacoid pharmacology. -- Oxford : Blackwell Science, 1997-. -- ISSN 1474-8665 print. -- ISSN 1474-8673 online |
| #554 | Autonomic neuroscience : basic & clinical. -- Amsterdam : Elsevier, 2000-. -- ISSN 1566-0702 print. -- ISSN 1872-7484 online |
| #555 | Aviakosmičeskaâ i èkologičeskaâ medicina. -- Moskva : Slovo, 1992-. -- ISSN 0233-528X |
| #556 | Avian pathology. -- Huntington : World Veterinary Poultry Association, 1972-. -- ISSN 0307-9457 print. -- ISSN 1465-3338 online |
| #557 | Aviation, space, and environmental medicine. -- Louisville : Aerospace Medical Association, 1975-. -- ISSN 0095-6562 print. -- ISSN 1943-4448 online |
| #558 | AWHONN lifelines. -- Philadelphia : Lippincott-Raven, 1997-2006. -- ISSN 1091-5923 print. -- ISSN 1552-6356 online |
| #559 | AXIOM innovations : the magazine for interventional radiology, cardiology and surgery. -- Forchheim : Siemens, 2007- |
| #560 | B-ENT. -- Leuven : Royal Belgian Society for Ear, Nose, Throat, Head and Neck Surgery, 2005-. -- ISSN 1781-782X |