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Online shopping from the earth's biggest selection of books, magazines, music, DVDs, videos, electronics, computers, software, apparel & accessories, shoes, jewelry, tools & hardware, housewares, furniture, sporting goods, beauty & person...

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

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.

Trade books for free with our online book swap. We are not just Paperbacks! Find a huge selection of hardbacks, audio books, romance novels and more.

Zotero is a powerful, easy-to-use research tool that helps you gather, organize, and analyze sources and then share the results of your research.

We are a nonprofit corporation composed of a diverse group of citizens from many countries who follow and document emerging and re-emerging disease.

IDEAS is a central index of economics and finance research, including working papers, articles and software code

An index of current online research in Philosophy. Also contains bibliographies, discussion forums, and advanced research tools for researchers.

Vimeo is a respectful community of creative people who are passionate about sharing the videos they make. We provide the best tools and highest quality video in the universe.