| Abbreviation | Definition |
|---|---|
| CML | Columbus Metropolitan Library |
| CML | Computational Mechanics Library |
| CML | Configurable Math Library |
| CML | Curriculum Materials Library |
| CMLC | Central Mississippi Library Council |
| CMN | Clinton-Macomb Public Library, North Branch |
| CMOS | Chicago Manual Of Style |
| CMPL | Clinton Macomb Public Library |
| CMPL | Clinton-Macomb Public Library |
| CMR | Christodoulou Meeting Room |
| CMRL | Central Murray Regional Library |
| CMS | Clinton-Macomb Public Library, South Branch |
| CNAEF | Centre Nationale des Archives de l'Eglise de France |
| CNCRL | Central North Carolina Regional Library (Burlington, NC) |
| CNDL | Caribbean Newspaper Digital Library |
| CNEN | Comiss??o Nacional de Energia Nuclear - Brazil |
| CNEN | Comissão Nacional de Energia Nuclear - Brazil |
| CNL | Compositional Numeric Library |
| CNRL | Central Northern Regional Library |
| CO | Checked Out |