edited by Frederik Pohl

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Yesterday's Tomorrows: Favorite Stories from Forty …

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Worlds of tomorrow. No. 23 (May 1967)

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Worlds of tomorrow. No. 22 (Feb. 1967)

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Worlds of tomorrow. No. 21 (Nov. 1966)

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Worlds of tomorrow. No. 20 (Aug. 1966)

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Worlds of tomorrow. No. 19 (May 1966)

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Worlds of tomorrow. No. 18 (March 1966)

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Worlds of tomorrow. No. 17 (Jan. 1966)

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Worlds of tomorrow. No. 16 (Nov. 1965)

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Worlds of tomorrow. No. 15 (Sept. 1965)