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governmental | environmental
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academic & science | geology
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miscellaneous | unclassified
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medical | physiology
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miscellaneous | unclassified
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governmental | nasa
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regional | airport codes
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academic & science | research
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Pearl River Valley Railroad Company
regional | railroads
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Protected Reconnaissance Vehicles
miscellaneous | unclassified
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Perceptual Research Ventures, Llc
business | companies & firms
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miscellaneous | aircraft & aviation
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academic & science | chemistry
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Pentavalent Rotavirus Vaccine (ie, Rotateq®) [replaced By "rota" Subsequently "rvs"]
medical
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miscellaneous | unclassified
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business | asx symbols
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miscellaneous | unclassified
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business | products
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business | nyse symbols
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miscellaneous | unclassified
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computing | software
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academic & science | mathematics
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business | london stock exchange
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Pressure Regulating Valve
miscellaneous | unclassified
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academic & science | mechanics
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business | companies & firms
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Paradise Resort Vacations
miscellaneous | unclassified
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miscellaneous | unclassified
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governmental | military
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governmental | military
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Pressure Regulating Shutoff Valve
miscellaneous | aircraft & aviation
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medical | physiology
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Pentavalent Rotavirus Vaccine
miscellaneous | unclassified