Periodical Abbreviations and Acronyms
- OFTOptical Fiber Technology
- OJAOxford Journal of Archaeology
- OJOAOxford Journal of Archaeology
- OKEANOkeanologiia
- OKLREUniversityrsity of Oklahoma Observatory Reprints
- OLOptics Letters
- OLEAROxen Learning
- OLEBOrigins Life Evolution Biosphere
- OLEBOrigins of Life and Evolution of The Biosphere
- ONOptics News
- ONERAOnera Tj
- ONRASOccasional Notes of The Royal Astronomical Society
- OOOriens Occidens
- OOVROObservations Owens Valley Radio Observatory
- OPATOptika Atmosfery
- OPATOOptika Atmosfery I Okeana
- OPMEPOptiko Mekhanicheskaia Promyshlennost
- OPNOptics & Photonics News
- OPPUTOptoelektronika I Poluprovodnikovaia Tekhnika
- OPSCNOptical Sciences Center Newsletter
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