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Year |
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1974 |
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1980- Summer (August 1, 1980) |
(PDF file) |
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1982- April
(April 25, 1982) |
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1985- April
(April 28, 1985) |
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1985- September |
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1987- April |
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1988- September
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1993- April |
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1993- August |
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1994- April |
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1996- April |
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1996- September |
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1998- April |
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1999- April |
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2002- September |
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2004- September |
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2006- September |
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2007- September |
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2008- April |
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2008- September |
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2009- September |
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