| Editorial | Fawcett Publications, Inc. |
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| Fecha de publicación | 1975-06 |
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| Idioma | inglés |
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| Páginas | 319 |
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| OCLC | 3826150 |
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| Número de Cutter | A832b |
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Part Four: 1933 - essay by Isaac Asimov The Man Who Awoke - novelette by Laurence Manning Tumithak in Shawm - novella by Charles R. Tanner Part Five: 1934 - essay by Isaac Asimov Colossus - novelette by Donald Wandrei Born of the Sun - novelette by Jack Williamson Sidewise in Time - novella by Murray Leinster Old Faithful - novelette by Raymond Z. Gallun