5
Published 1995
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Electronic Journal
6
Published 1983
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Electronic Journal
7
Published 1990
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Electronic Journal
8
by Crumbley, Joseph.
Published 1999
Book
9
Published 1997
Book
10
by Wallace, Harvey.
Published 2005
Book
12
Published 1994
Book
13
Published 2011
Book
14
by Janzen, Curtis., Harris, Oliver
Published 1980
Book
15
Published 2001
Book
18
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Electronic Journal
20
Published 2005
Book