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AbeBooks is your source for Used, New, Rare and Out of print books. Find classic collectibles, rare signed editions, used textbooks, and inexpensive bestsellers from independent booksellers worldwide.

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LibraryThing catalogs your books online, easily, quickly and for free.

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

Find what you want in a library near you with WorldCat, a global catalog of library collections.

Readcube is a free, simple, academic software and reference manager for researchers. Read Cube helps researchers organize, annotate and stay on top of new research literature.

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InTechOpen offers thousands of peer-reviewed free Open Access academic and scholarly articles and research papers. InTechOpen is part of InTech - Open Access Publisher...