edited by Frederik Pohl

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With Redfern on Capella XII

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Worlds of If #100

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Worlds of If #134

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Worlds of IF: A Retrospective Anthology

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Worlds Of IF, February 1969 (Volume 19, No. 2)

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Worlds of If Science Fiction (136)

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Worlds of If Science Fiction: December 1965

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Worlds of If Science Fiction: February 1966

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Worlds of If Science Fiction March 1963

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Worlds of if Science Fiction november 1968