"Voyages imaginaires Romans, nouvelles, etc." . . "Voyages, Imaginary Fiction." . . . . "Earth (Planet)" . . "Earth Core Fiction." . . . . . "Journey to the center of the earth, 1864"@en . . "Electronic books"@en . . . "Journey to the center of the earth, 1864" . . "Voyage au centre de la terre"@en . "Ressources Internet" . . "Voyage au centre de la terre" . "Science fiction"@en . . . . "Professor Hardwigg, his nephew Harry, and their guide Hans explore a volcanic crater in Iceland that leads them to the center of the Earth and to incredible and horrifying discoveries. Presented in comic book format."@en . "Professor Hardwigg, his nephew Harry, and their guide Hans explore a volcanic crater in Iceland that leads them to the center of the Earth and to incredible and horrifying discoveries. Presented in comic book format." . . "Adventure stories"@en .