The abbreviation OPER for operis occurs 13 times.
Click here for a list of all attestations.
| Alternative solutions for the abbreviation OPER | ||||
| Abbreviation | Abbreviated word | Frequency | ||
| OPER | operum | 39 | ||
| OPER | operis | 13 | ||
| OPER | opera | 5 | ||
| OPER | operarum | 2 | ||
| OPER | operas | 2 | ||
| OPER | operae | 1 | ||
| OPER | operam | 1 | ||
| OPER | opere | 1 | ||
| OPER | operi | 1 | ||
| OPER | operorum | 1 | ||