| #6521 | Reports of the Research Institute of Electrical Communication, Tohoku University. Series B, Technology. -- Japonsko : Sendai : Tohoku University, 1951-1975. -- ISSN 0563-6531 |
| #6522 | Reports on Mathematical Logic. -- Krakow : Jagiellonian University, 1973-. -- ISSN 0137-2904 |
| #6523 | Reports on progress in physics. -- London : Institute of Physics, 1934-. -- ISSN 0034-4885 print. -- ISSN 1361-6633 online |
| #6524 | Reports on the Progress of Applied Chemistry. -- London : Society of Chemical Industry, 1916-1976. -- ISSN 0370-6648 |
| #6525 | REPRO. -- United Kingdom -Spojené království Velké Británie : London : Institute of Reprographic Technology, 1965-1971 |
| #6526 | Reproduction. -- United Kingdom -Spojené království Velké Británie : Wallington : BED Business Journal, 1964 Croydon : BED Business Journal Wallington :, 1964-1980. -- ISSN 0034-4958 |
| #6527 | Reproduction Methods. -- Spojené státy americké - United States : New York : Gellert Publ., 1964-1971 |
| #6528 | Reprographics. -- Spojené státy americké - United States : New York : United Business Publ.,, 1963-1972. -- ISSN 0034-4982 |
| #6529 | Reprographics & engineering records management. -- Spojené státy americké - United States : New York : United Business Publ.,, 1972-1974. -- ISSN 0734-8371 |
| #6530 | Reprographics quarterly. -- Německo -Germany : Hatfield : National Reprographic Centre for documentation, 1973-1984. -- ISSN 0306-2880 |