| #1371 | Oils & fats international. -- Redhill : International Trade Publications., 1985-. -- ISSN 0267-8853 |
| #1372 | Olii minerali, grassi e saponi, colori e vernici. -- Itálie : Milano : Stazione sperimentale per l'industria degli olii e del grassi,, 1938-1960. -- ISSN 0369-7541 |
| #1373 | Optics and Spectroscopy. -- Spojené státy americké : Washington : Optical Society of America, 1960-1961 |
| #1374 | Organic & biomolecular chemistry : An international journal of all areas of organic, physical organic and biomolecular organic chemistry. -- Cambridge : Royal Society of Chemistry, 2003-. -- ISSN 1477-0520 print. -- ISSN 1477-0539 online |
| #1375 | Organic Finishing. -- ©výcarsko : Westwood : Finishing Pub.,, 1945-1957. -- ISSN 0096-2112 |
| #1376 | Organic letters. -- Columbus : American Chemical Society, 1999-. -- ISSN 1523-7060 print. -- ISSN 1523-7052 online |
| #1377 | Organic preparations and procedures international : the new journal for organic synthesis. -- Newton Highlands : Organic Preparations and Procedures, 1969-. -- ISSN 0030-4948 |
| #1378 | Organic process research & development. -- Washington : American Chemical Society, 1997-. -- ISSN 1083-6160 print. -- ISSN 1520-586X online |
| #1379 | Organická chemie a technologie : Organická chemie a technologie textilních pomocných prostředků. -- Česká Republika : Pardubice-Rybitví : Výzkumný ústav org. syntes,, 1951-1965. -- ISSN 0471-9433 |
| #1380 | Organometallic Chemistry Reviews. -- ©výcarsko : Lausanne : Elsevier, 1966-1967 |