المؤلفون: Rosny, J.-H., aîné, Boëx, Joseph-Henri-Honoré, Boex, Joseph-Henri-Honore, Rosny, J.-H., aine, Boëx-Borel, J. H., Enacryos, Boex, Joseph Henri Honoré, aîné, J.-H. Rosny, Rosny, J.-H., jeune, Boëx, Séraphin-Justin-François, Boëx, Séraphin Justin François, Boex, Seraphin-Justin-Francois, Boëx, Justin

مصطلحات موضوعية: Science fiction, Human-alien encounters -- Fiction, Prehistoric peoples -- Fiction

الاتاحة: https://www.gutenberg.org/ebooks/65845/