| #7231 | The Post Office electrical engineers' journal. -- Velká Británie : London : Institution of Post Office Electrical Engineers, 1908-. -- ISSN 0032-5287 |
| #7232 | The Proceedings of the Institution of electronics. -- Velká Británie : London : Forum publ,, 1953-1958 |
| #7233 | The Rayon record. -- Velká Británie : Manchester : T. Skinner,, 1929-1933. -- ISSN 0370-7008 |
| #7234 | The Refrigeration & air-conditioning business. -- Spojené státy americké : Cleveland : Industrial Publishing Co.,, 1958-1964 |
| #7235 | The Royal Television Society journal. -- Velká Británie : London : Royal Television Society, 1967-. -- ISSN 0035-9270 |
| #7236 | The Rubber age. -- Spojené státy americké : New York : Palmerton Publ.,, 1920-. -- ISSN 0035-9440 |
| #7237 | The Shoe and Leather News. -- Velká Británie : London : Straker Brothers, 1916-. -- ISSN 0037-4040 |
| #7238 | The short wave magazine & scanning scene. -- Velká Británie : Broadstone : PW Publishing, 2001-2005. -- ISSN 1746-6237 |
| #7239 | The SNTL Technical Digest. -- Česká republika : Prague : SNTL, 1959-1968 |
| #7240 | The Steam engineer : a practical journal devoted to reducing fuel costs. -- Velká Británie : London : Troup,, 1931-1963. -- ISSN 0370-9485 |