| #6601 | Reports of the Institute of High Speed Mechanics, Tohoku University. Series B, Technology. -- Japonsko : Tohoku Daigaku Kenkyujo hokoku. Kogaku - Soku-Ken, 1951-1989. -- ISSN 0370-5315 |
| #6602 | Reports of the Institute of Physical and Chemical Research. -- : Institute of Physical and Chemical Research, 1958-. -- ISSN 0020-3084 |
| #6603 | Reports of the Research Institute for Strenght and Fracture of Materials, Tohoku University. -- Japonsko : Sendai : Institute for Strength and Fracture of Materials, Tohoku University,, 1965-1986. -- ISSN 0563-6590 |
| #6604 | Reports of the Research Institute of Electrical Communication, Tohoku University. Series B, Technology. -- Japonsko : Sendai : Tohoku University, 1951-1975. -- ISSN 0563-6531 |
| #6605 | Reports on Mathematical Logic. -- Krakow : Jagiellonian University, 1973-. -- ISSN 0137-2904 |
| #6606 | Reports on progress in physics. -- London : Institute of Physics, 1934-. -- ISSN 0034-4885 print. -- ISSN 1361-6633 online |
| #6607 | Reports on the Progress of Applied Chemistry. -- London : Society of Chemical Industry, 1916-1976. -- ISSN 0370-6648 |
| #6608 | REPRO. -- United Kingdom -Spojené království Velké Británie : London : Institute of Reprographic Technology, 1965-1971 |
| #6609 | Reproduction. -- United Kingdom -Spojené království Velké Británie : Wallington : BED Business Journal, 1964 Croydon : BED Business Journal Wallington :, 1964-1980. -- ISSN 0034-4958 |
| #6610 | Reproduction Methods. -- Spojené státy americké - United States : New York : Gellert Publ., 1964-1971 |