| #1471 | Riken review : light science and technology. -- Saitama : The Institute of Physical and Chemical Research (RIKEN), 1993-. -- ISSN 0919-3405 |
| #1472 | Ring, Series A. -- Choczewo : Polish Zoological Society, 1954-. -- ISSN 0035-5429 |
| #1473 | Ringing & migration. -- Abingdon : Taylor & Francis, 1975-. -- ISSN 0307-8698 print. -- ISSN 2159-8355 online |
| #1474 | Rivista piemontese di storia naturale. -- Carmagnola : Museo Civico di Storia Naturale, 1980-. -- ISSN 1121-1423 |
| #1475 | RNA Biology. -- Georgetown : Landes Bioscience, 2004-. -- ISSN 1547-6286 print. -- ISSN 1555-8584 online |
| #1476 | Rocznik Dendrologiczny. -- Warszawa : Polskie Towarzystwo Botaniczne, 1979-2008. -- ISSN 0860-2646 |
| #1477 | Ročenka Československé společnosti entomologické. -- Praha : Československá společnost entomologická, 1954-1957. -- ISSN 0862-027X |
| #1478 | Rodriguesia. -- Rio de Janeiro : Jardim Botanico do Rio de Janeiro, 1935-. -- ISSN 0370-6583 print. -- ISSN 2175-7860 online |
| #1479 | Romanian Journal of Biophysics. -- Bucharest : Romanian Academy, 1992-. -- ISSN 1220-515X print. -- ISSN 1843-424X online |
| #1480 | Romanian journal of virology. -- Bucuresti : Acad. Romane, 1990-1999. -- ISSN 1018-0532 |