| #5531 | Operativní informace - úprava rud. -- Česká Republika : Mníšek pod Brdy : Výzkumný ústav ŽDHE, 1962 |
| #5532 | Optica acta. -- Basingstoke : Taylor & Francis, 1954-1986. -- ISSN 0030-3909 |
| #5533 | Optica Applicata. -- Wroclaw : Technical University, 1971-. -- ISSN 0078-5466 print. -- ISSN 1899-7015 online |
| #5534 | Optical and quantum electronics. -- London : Chapmann and Hall, 1975-. -- ISSN 0306-8919 print. -- ISSN 1572-817X online |
| #5535 | Optical engineering : the journal of SPIE - the International Society for Optical Engineering. -- Bellingham : Society of Photo-Optical Instrumentation Engineers, 1972-. -- ISSN 0091-3286 |
| #5536 | Optical journal and review of optometry. -- Spojené státy americké : Philadelphia : Chilton, 1900-1977. -- ISSN 0030-3925 |
| #5537 | Optical materials. -- Amsterdam : Elsevier Science, 1992-. -- ISSN 0925-3467 print. -- ISSN 1873-1252 online |
| #5538 | Optical spectra. -- Spojené státy americké : Pittsfield : Optical Pub., 1967-1981. -- ISSN 637487 |
| #5539 | Optical World. -- Velká Británie : London, vl.n., 1972-1977 |
| #5540 | Optician. -- Velká Británie : London : IPC Business Press, 1932, 1947-1979. -- ISSN 0030-3968 |