RLG may refer to:
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Research Libraries Group The Research Libraries Group (RLG) was a U.S.-based library consortium that existed from 1974 until its merger with the OCLC library consortium in 2006. RLG developed the Eureka interlibrary search engine, the RedLightGreen database of bibliograp ...
, a former U.S.-based library consortium
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Ring laser gyroscope
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Rostock Laage Airport (IATA airport code)
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Royal Lao Government
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