Encyclopedias, Almanacs, Transcripts, and Maps
- RNA (Ribonucleic acid)
- RNA (Ribonucleic Acid)
- RNA Function
- RNA Function
- RNA Splicing
- RNA Splicing
- RNA Tumor Viruses
- Roads and Highways
- Roald Amundsen
- Roald Hoffmann
- Robbins, Shawn (1945-)
- Robert A. Weinberg
- Robert August Bosch
- Robert Bailey Thomas
- Robert Barany
- Robert Boyle
- Robert Boyle
- Robert Burns Woodward
- Robert Burns Woodward
- Robert Bylot