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When searching in databases (OPAC or Proquest
Direct) or online (directories or search engines) you can
narrow down or broaden your search by using Boolean logic. Use
keywords and/or subjects in combination with AND, OR, AND NOT,
and " ".
For example, each combination below will yield
different results.
| civil AND war |
This search string would narrow down your results. Only sites
that include both terms would be found, but the terms do not
need to be related each other. For example, you might find sites
about civil ceremonies during World War I.
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| civil OR war |
This search would result in many hits. Every site will
include either Civil or War. You would get many sites, some useful
and some useless! It would be a great deal of work to weed
out the good from the bad. |
| civil AND NOT war |
This search would NEVER show any Civil War sites. You would probably
get sites about civil law, civil disobedience, civil court, etc. |
| "civil war" |
The use of quotation marks forces the search engine to find both
terms, Civil War, together on the site. |
Visit this internet site for more help with
Boolean
Logic. Also, remember to read the "Help" section
of each search engine for other useful tips.
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