Professor Challenger

Beelzebub Classics

Professor Challenger: The Complete Collection (English Edition)

PROFESSOR CHALLENGER: THE KEW GROWTHS AND OTHER STORIES: A Weird Science collection (English Edition)

Professor Challenger Series (English Edition)    

Professor Challenger: The Serpent of the Loch (English Edition)

Books on Demand

Professor Challenger - Gesamtausgabe: Die vergessene Welt, Im Giftstrom, Das Nebelland, Als die Erde schrie, Die Desintegrationsmaschine (German Edition)

PROFESSOR CHALLENGER: THE ISLAND OF TERROR: A Sequel to Conan Doyle's The Lost World (English Edition)

Baker Press

The Professor Challenger Chronicles (A Collection of Works) (English Edition)

Professor Challenger at the Edge of Eternity (Anthology Presents: The Professor Challenger Trilogy Book 1) (English Edition)

Professor Challenger at the Cusp of Mortality (Anthology Presents: The Professor Challenger Trilogy Book 3) (English Edition)

Professor Challenger Complete Collection : he Lost World | The Poison Belt | The Land of Mist | The Disintegration Machine | When the World Screamed | Original Edition Annotated (English Edition)