| #1261 | Notulae odonatologicae. -- Bilthoven : Ursus Scientific Publishers, 1998-. -- ISSN 0166-6584 |
| #1262 | Novitates botanicae Universitatis Carolinae. -- Praha : Karolinum, 1982-. -- ISSN 0862-5158 |
| #1263 | Novon. -- Lawrence : Missouri Botanical Garden, 1991-. -- ISSN 1055-3177 print. -- ISSN 1945-6174 online |
| #1264 | Novosti sistematiki nizšich rastenij. -- ISSN 0568-5485 |
| #1265 | Novosti sistematiki vysšich rastenij. -- Sankt-Peterburg : Nauka, 1964-. -- ISSN 0568-5443 |
| #1266 | Nuclear medicine and biology. -- Oxford : Pergamon Press, 1993-. -- ISSN 0969-8051 print. -- ISSN 1872-9614 online |
| #1267 | Nucleic acids research. -- London : Oxford University Press, 1974-. -- ISSN 0305-1048 print. -- ISSN 1362-4962 online |
| #1268 | Nucleosides & nucleotides : an international journal for rapid communication. -- New York : Taylor & Francis, 1982-1999. -- ISSN 0732-8311 |
| #1269 | Nucleosides, nucleotides and nucleic acids. -- Monticello : Monticello, N.Y. : Marcel Dekker, 2000-. -- ISSN 1525-7770 print. -- ISSN 1532-2335 online |
| #1270 | Nutrition and metabolism. -- Basel : Karger, 1970-1980. -- ISSN 0029-6678 |