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General Encyclopedias (Online)
Encyclopaedia Britannica Online (Academic Edition)
A search and directory site featuring Encyclopædia Britannica, the Web's best sites, news, magazines and more.
Oxford Reference Online
Oxford Reference Online is updated at least three times a year with new titles, new editions, and additional features.
Encyclopedia.com
Encyclopedia.com has more than 100 trusted sources, including encyclopedias, dictionaries, and thesauruses with facts, definitions, biographies, synonyms, pronunciation keys, word origins, and abbreviations.
General Encyclopedias (Print)