Charles Wells. Professor Emeritus of Math at Case Western Reserve University. Websites:
http://www.abstractmath.org/Word%20Press/ http://www.abstractmath.org/ http://www.cwru.edu/artsci/math/wells/home.html
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http://www.abstractmath.org/Word%20Press/ http://www.abstractmath.org/ http://www.cwru.edu/artsci/math/wells/home.html