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Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Internet Archive is a non-profit digital library offering free universal access to books, movies & music, as well as 150 billion archived web pages.

The most complete library of Marxism with content in over 40 languages and the works of over 400 authors readily accesible by archive, sujbect, or history.

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.

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 ...

Infoplease.com, a free, authoritative, and respected reference for Internet users, provides a comprehensive encyclopedia, almanac, atlas, dictionary, and thesaurus. Infoplease.com contains facts on all subjects including sports, entertainment, techno...

The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award-winning expertise in content, community services, expert co...

YouTube is a place to discover, watch, upload and share videos.

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Academia.edu helps academics follow the latest research.