| item | description | category | filter | more on... |
| OPR | Office of Primary Responsibility | Governmental/US Gov. |
<<
|
|
| OPR | Office of Primary Responsibility | Governmental/Military |
<<
|
|
| OPR | Office of Primary Responsibility | Governmental/NASA |
<<
|
|
| OPR | Office of Professional Responsibility | Governmental/FBI |
<<
|
|
| OPR | Office Procedures Reinforcement | Business/General |
<<
|
|
| OPR | Officer Performance Report | Governmental/Military |
<<
|
|
| OPR | Official Public Record | Governmental/US Gov. |
<<
|
|
| OPR | Old Parish Records | Other/Religion |
<<
|
|
| OPR | Ontario Pacific Railway | Regional/Railroads |
<<
|
|
| OPR | Operations Planning Review | Governmental/NASA |
<<
|
|
| OPR | Operator | Governmental/NASA |
<<
|
|
| OPR | Operator | Governmental/Military |
<<
|
|
| OPR | Orbiter/Payload Recorder | Governmental/NASA |
<<
|
|
| OPR | Oregon Pacific Railroad Company | Regional/Railroads |
<<
|
|
| OPR | Organization of Primary Responsibility | Governmental/Military |
<<
|
|
| OPR | Ottawa & Prescott Railway | Regional/Railroads |
<<
|
|
| OPR | Oxygen Pressure Regulator | Governmental/NASA |
<<
|
|