1
by Smith
Published 2009
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by Glazer
Published 2007
3
Published 2006
4
by Glick
Published 2010
5
6
7
by BARNUM
Published 1998
8
by SHULER
Published 1992
9
by PETERS
Published 1993
10
Published 2001
11
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12
by Saliterman
Published 2006
13
by Najafpour
Published 2007
14
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