EBSCOhost
        Academic Search Alumni Edition, 5/1/2002-
        Academic Search Complete, 5/1/2002-
        Academic Search Elite, 5/1/2002-
        Academic Search Premier, 5/1/2002-
        Academic Search R&D, 5/1/2002-
        Academic Search Ultimate, 5/1/2002-
        Academic Search: Main Edition, 5/1/2002-
        Advanced Placement Source, 5/1/2002-
        Biomedical Reference Collection: Corporate Edition, 5/1/2002-
        Biotechnology Source, 5/1/2002-
        Current Abstracts, 5/1/2002-
        Engineering Source, 5/1/2002-
        General Science Full Text (H.W. Wilson), 5/1/2002-
        GeoRef
        Inspec
        MainFile, 5/1/2002-
        Middle Eastern & Central Asian Studies, 5/1/2002-
        OmniFile Full Text Mega (H.W. Wilson), 5/1/2002-
        OmniFile Full Text Select (H.W. Wilson), 5/1/2002-
        One Belt, One Road Reference Source, 5/1/2002-
        Petroleum Abstracts (Online)
        Science and Technology Collection, 5/1/2002-
        Science Full Text Select (H.W. Wilson), 5/1/2002-
        STM Source, 5/1/2002-
        TOC Premier (Table of Contents), 5/1/2002-
    Elsevier BV
        GEOBASE
        Scopus, 2002-
    MinAbs Online
    Ovid
        GeoRef
        Inspec
        Petroleum Abstracts (Online)
    ProQuest
        GeoRef
        Petroleum Abstracts (Online)
    Thomson Reuters
        Current Contents
        Science Citation Index Expanded
        Web of Science
        Zoological Record Online