R
- Retos 15
- Review of International Geographical Education Online 2
- Reviews in Agricultural Science 2
- Reviews on Environmental Health 1
- Revista de Estudos Constitucionais, Hermeneutica e Teoria do Direito 1
- Revista de Gestao Social e Ambiental 3
- Revista Electronica de Veterinaria 1
- Rice Science 1
- Riset Geologi dan Pertambangan 2
- Risk Management and Healthcare Policy 2