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Docstoc is a community for people to find and share professional documents. Find free legal documents and free business documents.

A free web based community and discussion forum for answering Computer Help, Security, and Technical questions asked by the Novice Computer User

IOPscience is a unique platform for IOP-hosted journal content providing site-wide electronic access to more than 130 years of leading scientific research, and incorporates some of the most innovative technologies to enhance your user-experience.

The National Geophysical Data Center (NGDC) is part of the US Dept of Commerce, National Oceanic & Atmospheric Administration, National Environmental Satellite, Data, & Information Service

Nature - the world

Scientific Literature Digital Library incorporating autonomous citation indexing, awareness and tracking, citation context, related document retrieval, similar document identification, citation graph analysis, and query-sensitive document summaries. ...