Browse Subjects - R
- Radio astronomy
- The History of Radio Astronomy: A Bibliography, 1898-1983, Sarah Stevens-Rayburn
- Raymond Davis, Jr.
- Solar Neutrino Experiments
- Reference books
- History of Science / Science Studies Reference Sources (1994 - ), Doug Stewart
- The Library: Curtis Schuh's Biobibliography of Mineralogy
- Reference works and repositories
- History of Science / Science Studies Reference Sources (1994 - ), Doug Stewart
- Isis Current Bibliography of the History of Science
- The Library: Curtis Schuh's Biobibliography of Mineralogy
- Reformation
- Index of Prohibited Books from the Roman Office of the Inquisition, 1559, Michael Scheifler
- Relativity
- The Albert Einstein Archives (2001 - )
- Einstein Archives Online (2003 - )
- Renaissance
- AN ANALYTIC BIBLIOGRAPHY OF ON-LINE NEO-LATIN TEXTS (1999 - ), Dana F. Sutton
- Archimedes Project
- Biblioteca Virtuale Online: Texts and Images of Humanism and the Renaissance (2002 - )
- Database Machine Drawings
- Epact: Scientific Instruments of Medieval and Renaissance Europe (2001 - )
- Renaissance Western European contexts
- AN ANALYTIC BIBLIOGRAPHY OF ON-LINE NEO-LATIN TEXTS (1999 - ), Dana F. Sutton
- Biblioteca Virtuale Online: Texts and Images of Humanism and the Renaissance (2002 - )
- Database Machine Drawings
- Index of Prohibited Books from the Roman Office of the Inquisition, 1559, Michael Scheifler
- La Biblioteca Ideale di Giordano Bruno: L'Opera e Le Fonti
- The Philological Museum
- Wolfenbüttel Digital Library
- Research
- Minerva: A Review of Science, Learning and Policy
- Research institutes; research stations
- Deciphering the Genetic Code: Marshall Nirenberg, Sarah A. Leavitt
- Minerva: A Review of Science, Learning and Policy
- Woods Hole Oceanographic Institution: History (2007 - )
- Research schools
- Minerva: A Review of Science, Learning and Policy
- Revolutions in science
- Darwiniana and Evolution: Links to our Past, News of the Present, Insight for the Future (2000 - )
- Evolution: Selected Papers and Commentary (1998 - ), Donald R. Forsdyke
- Roman Catholic Church
- Index of Prohibited Books from the Roman Office of the Inquisition, 1559, Michael Scheifler
- Rome
- Apeiron: Journal for Ancient Philosophy and Science (1967 - )
- Perseus Digital Library
- Royal Society of Australia
- Deceased Fellows and Memoirs, Australian Academy of Science, Editors: R. W. Home, L. Robin
- Royal Society of London
- The Robert Boyle Project, Michael Hunter
- The Royal Society Centre for History of Science
