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Multiple words are treated as separate search terms

Search term Search results (items including the following terms and combinations)
"Columbia river" The phrase: Columbia river
Columbia river Columbia or river
Columbia, river Columbia or river
Columbia River assumed to be the name: Columbia River
Where is the Columbia River basin? Columbia or river or basin
NOT Columbia river river but not Columbia
Columbia NOT river Columbia but not river
Columbia AND river Columbia and river
+Columbia river must contain Columbia; may contain river
+Columbia +river Columbia and river
-Columbia river river but not Columbia

If you are unsure of the spelling, or more than one spelling may be used, include alternative spellings as separate search terms

    • Example:
      To search for the word "defense" with an alternate spelling of "defence", search for either:
      • defense, defence
      • defense defence

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Reviewed 20 Oct 2008