Dated December 1972 on the cover. |
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Dated February 1973 on the cover. |
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Dated April 1973 on the cover and spine. |
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Dated June 1973 on the cover and spine. |
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Mislabelled #166 instead of #167. Dated August 1973 on the cover and spine. |
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Dated October 1973 on the cover and spine. |
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Dated December 1973 on the cover and spine. |
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Dated February 1974 on the cover and spine. |
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Dated April 1974 on the cover and spine. |
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Dated June 1974 on the cover and spine. Described as a “New Editor’s Special Introductory All-Star Issue” on the cover and spine, even though Baen became editor with the previous issue. The normal cover price of 75¢ has been “X”ed out, and printed in a large blue circle is 59¢ encircled by “Special Trial Offer” |
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Dated August 1974 on the cover and spine. |
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Dated October 1974 on the cover and spine. Cover artist given as Wendi Pini |
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Dated December 1974 on the cover and spine. |
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Dated Fall (no year) on the cover and spine. |
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British reprint edition of (Worlds of) If. |
Reprint of the March 1953 (US) issue. |
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Reprint of the May 1953 (US) issue. |
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Partial reprint of the July 1953 (US) issue. |
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Partial reprint of the September 1953 (US) issue. Details taken from Table of Contents. |
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Partial reprint of the November 1953 (US) issue. |
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Partial reprint of the January 1954 (US) issue. |
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Partial reprint of the January 1953 (US) issue. |
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Partial reprint of the March 1954 (US) issue. |
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Partial reprint of the April 1954 (US) issue. |
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Partial reprint of the May 1954 (US) issue. |
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Partial reprint of the June 1954 (US) issue, plus a single story from elsewhere. |
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Partial reprint of the July 1954 (US) issue. |
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Given as “No. 13” on the cover and spine. Partial reprint of the August 1954 (US) issue. |
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Given as “No. 14” on the cover and spine. Reprint of the September 1954 (US) issue. |
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Reprint of the October 1954 (US) issue. |
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