| #2441 | Rheumatology and rehabilitation. -- London : Bailliere Tindall, 1973-1982. -- ISSN 0300-3396 |
| #2442 | Rice university studies. -- Houston : The University, 1962-1981. -- ISSN 0035-4996 |
| #2443 | Rig. -- Stockholm : Foreningen for Svensk Kulturhistorie, Nordiska Museet, 1918-. -- ISSN 0035-5267 |
| #2444 | Riken review : light science and technology. -- Saitama : The Institute of Physical and Chemical Research (RIKEN), 1993-. -- ISSN 0919-3405 |
| #2445 | Ring, Series A. -- Choczewo : Polish Zoological Society, 1954-. -- ISSN 0035-5429 |
| #2446 | Rivista di filosofia neoscolastica. -- Milano : Vita e Pensiero, 1909-. -- ISSN 0035-6247 print. -- ISSN 1827-7926 online |
| #2447 | Rivista di studi liguri. -- Bordighera : Istituto Internazionale di Studi Liguri, 1942-. -- ISSN 0035-6603 |
| #2448 | Rivista internazionale di scienze sociali. -- Milano : Vita e pensiero, 1934-. -- ISSN 0035-676X print. -- ISSN 1827-7918 online |
| #2449 | Rock mechanics. -- Wien : Springer, 1969-1982. -- ISSN 0035-7448 |
| #2450 | Rocznik astronomiczny. -- ISSN 0209-0341 |