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Covers 3,500 sci/tech journals, some key areas include: applied physics, controls, systems, and manufacturing. I suggest combining your searches with Compendex.
Delivering full text access to the world's highest quality technical literature in engineering and technology
Free digital archive of biomedical and life sciences journal literature from NIH (U.S. National Institutes of Health).
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Full-text access to all books from 2005-2013 covering
e-Journal Core Collection 1997 to date
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