2
Published 1993
Serial
3
Serial
5
Published 1989
Serial
6
Published 1994
Book
7
Published 2005
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Electronic Journal
9
Published 1999
Book
10
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Electronic Journal
11
Published 1996
Book
15
Published 2000
Book
17
Published 2008
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Electronic Journal
18
19
by Sultz, Harry A.
Published 2011
Book
20
Published 2010
Book