- Cambridge University Press4
- Canadian Science Publishing2
- CARL HANSER VERLAG2
- CDS Press2
- CELL PRESS3
- Center for Environmental and Energy Research and Studies1
- CENTRO UNIV LA SALLE-RJ2
- CEUR-WS2
- Chamber of Textile Engineers2
- Chemical Publishing Co.3
- Chemical Society of Ethiopia2
- CHEM SOC ETHIOPIA1
- Chulalognkorn University2
- Churchill Livingstone2
- CIBER Institute2
- Commonwealth of Learning2
- Computers and Industrial Engineering1
- Copernicus Publications2
- Corvinus University of Budapest2
- CRC Press5
- CUKUROVA UNIV2
- CUKUROVA UNIV, FAC MEDICINE11
- CUMHURIYET UNIV, FAC THEOLOGY1
- Cumhuriyet University2
- Cyprus International University2
- Czech Academy of Agricultural Sciences5
- Czestochowa University of Technology3
