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Volume 76, Number 1, March 1993
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Volume 72, Number 1, March 1989
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Volume 72, Number 2, May 1989
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Volume 72, Number 3, September 1989
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Volume 71, Number 3, September 1988
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Volume 71, Number 4, December 1988
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Volume 70, Number 1, March 1987
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Volume 70, Number 2, May 1987
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Volume 70, Number 3, September 1987
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Volume 70, Number 4, December 1987
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Volume 69, Number 2, May 1986
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Volume 69, Number 3, September 1986
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Volume 69, Number 4, December 1986
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Volume 84, Number 2, May 2001
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