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  Boschat, Mike.   Astronomy Page.   <http://www.atm.dal.ca/~boschat/>.

  Tom's Astronomy Web.  <http://laplaza.org/~tom/yAstro.htm>.

   Wormley, Samuel J.  Astronomy Clubs, Societies, Associations and Organizations.   Educational Observatory Institute.  2007. <http://www.edu-observatory.org/eo/astronomy_clubs.html>.