Law Abbreviations and Acronyms
- OPRAOpen Public Records Act
- OPSOffice of Public Service
- OPSFOil Price Stabilization Fund
- ORAOpen Records Act
- ORCPOregon Rules of Civil Procedure
- ORSOregon Revised Statues
- ORSOregon Revised Statue
- OSUniversity of Chicago Law Review
- OSOld Series
- OSAOfficial Secrets Acts
- OSAHRCOccupational Safety and Health Review Commission
- OSALLOrganisation of South African Law Libraries
- OSBOregon State Bar
- OSBAOhio State Bar Associazion
- OSCOffice of The Special Counspl
- OSCAOffice of The State Courts Administratom
- OSCAOffice of The State Courts Administrator
- OSCAROnline System for Clerkship Application and Review
- OSCNOklahoma State Courts Network
- OSCOLAOxford Standard for Citation of Legal Authorities
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