| #341 | Iowa State journal of research. -- Ames : Iowa State University Press, 1972-1988. -- ISSN 0092-6345 |
| #342 | ISIS : AN INTERNATIONAL REVIEW DEVOTED TO THE HISTORY OF SCIENCE ... -- Chicago : University of Chicago Press, 1913-. -- ISSN 0021-1753 print. -- ISSN 1545-6994 online |
| #343 | ISR. -- London : Heyden and Son, 1976-. -- ISSN 0308-0188 print. -- ISSN 1743-2790 online |
| #344 | Issues in innovation. -- Melbourne : Innovation Congress, 2004-. -- ISSN 1943-4820 |
| #345 | Issues in science and technology. -- Washington : National Academy of Sciences, 1984-. -- ISSN 0748-5492 print. -- ISSN 1938-1557 online |
| #346 | Istorija i metodologija jestestvennych nauk. -- Moskva : Izdatel'stvo Moskovskogo Universiteta, 1960-. -- ISSN 0579-0204 |
| #347 | Izvestiâ Sibirskogo otdeleniâ Akademii nauk SSSR. -- Novosibirsk : Novosibirkoje knižnoje izdat., 1938-. -- ISSN 0134-2428 |
| #348 | Izvestiya Physics of the Solid Earth. -- Washington : American Geophysical Union in cooperation with the Geological Society of America, 1992-. -- ISSN 1069-3513 print. -- ISSN 1531-8451 online |
| #349 | Jahrbuch. -- Bern : Schweizerische Akademie der Naturwissenschaften, 1990-1999. -- ISSN 1421-4482 |
| #350 | Jahrbuch - Akademie der Wissenschaften der DDR. -- Berlin : Akad.-Verlag, 1973-1994. -- ISSN 0304-2154 |