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| #512 | La Recherche. -- Paris : Société d'éditions scientifiques, 1970-. -- ISSN 0029-5671 print. -- ISSN 1625-9955 online |
| #513 | Reports of Research Institute for Applied Mechanics. -- Fukuoka : Research Institute for Applied Mechanics, 1972-1998. -- ISSN 0023-6195 |
| #514 | Reports of the Faculty of Science Kagoshima University. -- Kagoshima : Kagoshima University, 1969-1996. -- ISSN 0385-4019 |
| #515 | Research. -- London : Butterworth, 1947- |
| #516 | Research & development. -- Newton : Cahners Publ., 1984-. -- ISSN 0746-9179 |
| #517 | Research EU Results Magazine : Results magazine. -- Luxembourg : Publications Office, 2011-. -- ISSN 1831-9947 |
| #518 | Research Europe. -- London : Research Research, 1996-. -- ISSN 1366-9885 |
| #519 | Research in Astronomy and Astrophysics. -- Beijing : Science Press, 2009-. -- ISSN 1674-4527 |
| #520 | Research in science & technological education. -- Abingdon : Carfax, 1983-. -- ISSN 0263-5143 print. -- ISSN 1470-1138 online |