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Reference.com - Free online encyclopedia and reference. Quickly research famous people, places, topics, and events from trusted sources.
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A reference, or a reference point, is the intensional use of one thing, a point of reference or reference state, to indicate something else [citation needed]
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Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.
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Search online reference materials - American Heritage Dictionary, Columbia Encyclopedia, Roget's Thesaurus, World Factbook, Spanish to English Dictionary, Quotations ...
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