out of print
January 1981 - 63
January 1981 Issue 63
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February 1981 - 64
February 1981 Issue 64
Table of Contents
out of print
March 1981 - 65
March 1981 Issue 65
Table of Contents
out of print
April 1981 - 66
April 1981 Issue 66
Table of Contents
out of print
May 1981 - 67
May 1981 Issue 67
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July 1981 - 68
July 1981 Issue 68
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August 1981 - 69
August 1981 Issue 69
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September 1981 - 70
September 1981 Issue 70
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October 1981 - 71
October 1981 Issue 71
Table of Contents
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November 1981 - 72
November 1981 Issue 72
Table of Contents
out of print
December 1981 - 73
December 1981 Issue 73
Table of Contents