Encyclopedias, Almanacs, Transcripts, and Maps
- radiation, non-ionizing
- Radioactive Implants
- Radiologic Technology
- Radiologic Technology
- Radiopharmaceuticals
- Rapid Streptococcus Antigen Tests
- Rapid Streptococcus Antigen Tests
- Rating Scale
- Rational Emotive Therapy
- Rational-Emotive Behavior Therapy
- Raynaud's Syndrome
- Reactive Attachment Disorder of Infancy or Early Childhood
- Readiness Test
- Reading Disorder
- Reality Therapy
- Receptor Analysis
- Recompression Treatment
- Reconstructive Surgery
- Recovery at Home
- Recovery at Home