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miscellaneous | funnies
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academic & science | libraries
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academic & science | electronics
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medical | physiology
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Naperville Public Library
academic & science | libraries
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academic & science | amateur radio
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governmental | politics
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academic & science | chemistry
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academic & science | libraries
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Neutrophil Polymorphonuclear Leucocyte
medical | laboratory
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Nonlinear Programming Language
computing | software
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business | credit unions
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miscellaneous | unclassified
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academic & science | ocean science
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governmental | us government
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academic & science | meteorology
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academic & science | physics
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miscellaneous | unclassified
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miscellaneous | unclassified
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New Plymouth, New Zealand
regional | airport codes
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community | sports
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Nuclear Plasma Laboratory
academic & science | physics
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academic & science | libraries
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miscellaneous | unclassified
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National Physical Laboratory
academic & science | physics
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business | accounting
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miscellaneous | unclassified
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Norristown Public Library
academic & science | libraries
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National Physics Laboratory
academic & science | physics
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miscellaneous | unclassified
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computing | software
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business | mortgage
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governmental | nasa
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National Physical Laboratory
medical | medical physics
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governmental | us government
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Nashville Public Library's
academic & science | libraries