- RDA - See - Resource Description and Access
- RDA Alternatives
- RDA Core Elements
- RDA Exceptions
- RDA Options
- RDA Relationship Designator - See - Relationship Designator
- RDA Toolkit
- Reference Service
- Relationship Designator
- Research
- Resource
- Resource Access
- Resource Description
- Resource Description and Access (RDA)
- Resource Description and Access (RDA) Cataloging Resources
- 20% Rule - See - Twenty-Percent Rule (LCSH)
