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There may be browser compatibility issues with some databases. Sometimes you will see an error message or not be able to access database. One possible solution for this would be to switch browsers or possibility update your browser. There have been issues with ASTM International Digital Library and Knovel databases
ASTM Digital Library provides access to full text journals, special technical publications, manuals, data series, and terminology that covers a broad range of engineering disciplines.
Elsevier ScienceDirect is a leading scientific database offering journal articles and book chapters from more than 2,500 journals
Wiley Online Library hosts the world's broadest and deepest multidisciplinary collection of online resources covering life, health and physical sciences, social science, and the humanities. It delivers seamless integrated access to over 6 million articles from over 1500 journals, over 18,000 online books, and hundreds of reference works, laboratory protocols and databases.