| Abbreviation | Definition |
|---|---|
| ABBR | Abbreviation |
| ABBREV | Abbreviation |
| ABBV | Abbreviations |
| ABC | American Bibliographical Center |
| ABCL | Anton Brees Carillon Library |
| ABES | Annotated Bibliography for English Studies |
| ABLE | Alternative Basic Library Education |
| ABLE | ARIC Box Library Extension |
| ABS | Antiquarian Bookman Society |
| ABSC | Association des biblioth??ques de la sant?? du Canada |
| ABSC | Association des bibliothèques de la santé du Canada |
| ABU | Albania Bibliotec University |
| ACDL | Ashtabula County District Library |
| ACDP | Australian Cooperative Digitisation Project |
| ACFL&MH | Andrew Carnegie Free Library and Music Hall |
| ackn. | acknowledge(d) |
| ACLA | Allegheny County Library Association |
| ACLA | Azalea Coast Library Association |
| ACLB | Association of CT Library Boards |
| ACLD | Alachua County Library District |