June 1985
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August 1985
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August and September 1985
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November 1985
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December 1985
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February 1986
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March 1986
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April 1986
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May 1986
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October 1986
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November 1986
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November Revised and December 1986
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December 1986
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January and February 1987
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February and March 1987
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March and April 1987
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April and May 1987
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May and June 1987
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May, June and July 1987
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July and August 1987
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August and September 1987
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September and October 1987
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October and November 1987
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November and December 1987
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December 1987
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January and February 1988
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February 1988
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March and April 1988
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April and May 1988
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May and June 1988
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June 1988
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July 1988
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August and September 1988
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September 1988
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September 2008
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September 2008
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March 2009
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March 2009
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November 2009
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March 2009
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