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Provides access to 300+ fully searchable engineering reference and textbooks. You will also find books from the popular Schaum Outlines series which provide sound introductory information in most scientific disciplines.
arXiv provides free access to pre-prints in Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics.
e-prints are electronic pre-prints. ArXiv makes scientific e-prints available to all online. Most of these submissions go on to be published in scholarly journals, and are not yet peer reviewed, or have been peer reviewed and have deposited the pre-print ( unpublished version) to maintain copyright regulations.