| Abbreviation | Definition |
|---|---|
| APPLE | Apple Puget Sound Program Library Exchange |
| APPLE | Apple Pugetsound Program Library Exchange |
| APRIL | All People Read In The Library |
| APRIL | Australian Poetry Resources Internet Library |
| APRL | American Philatelic Research Library |
| APRL | American Philatelic Research Library's |
| APRL | Azure Proactive Resiliency Library |
| APSL | Adult Programming For Small Libraries |
| AQPL | Advancing Queensland Public Libraries |
| ARBA | American Reference Book Annual |
| ARC | Advanced Reader Copy |
| ARCAT | Archives of the Roman Catholic Archdiocese of Toronto |
| ArchBiochem | Archives of Biochemistry |
| ArchDermatol | Archives of Dermatology |
| ArchEnvironHealth | Archives of Environmental Health |
| ArchExpPatholPharmakol | Archiv for Experimentelle Pathologie und Pharmakologie |
| ArchGewerbepathGewerbehyg | Archiv for Gewerbepathogie und Gewerbehygiene |
| ArchHyg | Archiv for Hygiene |
| ArchHygBakteriol | Arch for Hygiene und Bakteriologie (Munich) |
| ArchIntPharmacoTher | Archives Internationales de Pharmacodynamie et de Therapie |