2
Published 2006
Electronic
3
by Petras, James F.
Published 1971
Book
4
Published 1992
Book
6
Published 1993
Book
7
Published 1989
Book
8
9
Published 2006
Book
10
Published 2006
Book
11
Published 2004
Book
12
Journal
13
Journal
14
Journal
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Journal
16
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