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Forum: A Cyclical Theory of Science Fiction

Poul Anderson

First published August 1974
Type Essay

Date Publication Publisher Type Page
August 1974 Cover Galaxy Science Fiction, August 1974 UPD Publishing Corporation MAGAZINE 6
August 1974 Cover Galaxy Science Fiction Magazine, August 1974 Universal-Tandem Publishing Company Ltd. MAGAZINE 6
April 1975 Cover Apothéoses, apocalypses et retours à zéro OPTA Anthology 201
April 1975 Cover Apothéoses, apocalypses et retours à zéro OPTA Anthology 201