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History
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98
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91
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71
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Published 1980
Government Document
Book
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4
Published 2006
Government Document
Conference Proceeding
Book
5
Published 2002
Government Document
Book
6
7
Published 2003
Government Document
Book
8
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10
11
12
Published 2004
Government Document
Book
13
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Published 2005
Government Document
Book
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Published 1990
Government Document
Book