5
Published 1990
Conference Proceeding Book
6
Published 1983
Book
7
Published 1986
Book
8
Published 1977
Book
10
Published 1988
Book
12
17
Published 1990
Book
19
Published 1984
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Electronic Journal
20
Book
21
Published 1990
Book
22
23
by Gates, Jean Key.
Published 1989
Book
28
Published 1937
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Electronic Journal