BASE is one of the world's most voluminous search engines especially for academic web resources, e.g. journal articles, preprints, digital collections, images / videos or research data. BASE provides more than 240 million documents from more than 8,000 content providers.
2002-present. Site searches over 36 databases and 1,850 selected websites, offering 200 million pages of authoritative U.S. government science information, including research and development results.
KMODDL is the Kinematic Models for Design Digital Library developed at Cornell University. It includes open access, multimedia resources for learning and teaching about kinematics – the geometry of pure motion – and the history and theory of machines.
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