| #181 | Centaurus. -- Oxford : Blackwell, 1950-. -- ISSN 0008-8994 print. -- ISSN 1600-0498 online |
| #182 | Cesty psychotroniky : občasník Klubu psychotroniky a UFO a Sdružení badatelů v psychotronice. -- Praha : Klub psychotroniky a UFO a Sdružení badatelů v psychotronice, 1999-. -- ISSN 1212-5571 |
| #183 | Ciencia e ingenieria neogranadina. -- Bogota : Universidad Militar, 2000-. -- ISSN 0124-8170 |
| #184 | Ciencia e investigación. -- Buenos Aires : Asociacion Argentina Para el Progreso de las Ciencias, 1945-. -- ISSN 0009-6733 |
| #185 | Clinical anatomy. -- New York : Alan R. Liss, 1988-. -- ISSN 0897-3806 print. -- ISSN 1098-2353 online |
| #186 | Coastal engineering. -- Amsterdam : Elsevier, 1977-. -- ISSN 0378-3839 print. -- ISSN 1872-7379 online |
| #187 | Cold regions science and technology. -- Amsterdam : Elsevier, 1979-. -- ISSN 0165-232X print. -- ISSN 1872-7441 online |
| #188 | Comenius : journal of Euro-American civilization. -- New York : Comenius Academic Club, 2014-. -- ISSN 2333-4142 |
| #189 | Communications Faculty of Sciences University of Ankara, Series A1: mathematics and statistics. -- Ankara : University of Ankara, 1985-. -- ISSN 1303-5991 |
| #190 | Comparative biochemistry and physiology. -- London : Pergamon Press, 1960-1970. -- ISSN 0010-406X print. -- ISSN 1879-3029 online |