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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...

Twitter is without a doubt the best way to share and discover what is happening right now.

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.

Providing researchers with access to millions of scientific documents from journals, books, series, protocols and reference works.

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

Lulu.com lets you make, self-publish, print and sell print-on-demand books, e-books, photo books and calendars with free book publishing.

The authoritative Collins dictionaries now available online. Search amongst hundreds of thousands of words and expressions in Spanish, French, German, Italian, Chinese, Portuguese, Russian and synonyms dictionaries.

Academia.edu helps academics follow the latest research.