CLR.Databases Cambridge University Press Oxford University Press EBSCO O’REILLY IEEE Xplore SciVal Springer Scopus Taylor & Francis Journals Taylor & Francis Ebooks ProQuest Central ProQuest Ebook Central ScienceDirect Google Scholar Alexander Street Web of ScienceDatabase Directory of Open Access Journals (DOAJ) Bielefeld Academic Search Engine (BASE) SAGE Open Journals SAGE Research Methods South African Journal of Science IMF Data US Congress GTD OER Commons PNAS PubMed Central MERLOT UN Data ECON BIZ The World Factbook Europe PMC Science.gov HathiTrust SSRN (Social Science Research Network) OAIster CORE MIT Open CourseWare JSTOR Online access to research in the environment (OARE) ERIC
