"espace extraterrestre - conquête habitat." . . . . . . "The high frontier : Human colonies in space" . . . . . . . . . . . . . . . "The high frontier human colonies in space" . "The high frontier human colonies in space"@en . . . . . . . . . . . . . . . . "In the future thousands of people will be living in outer space colonies. This book shows how the world of the future will be, a self suffient paradise, a colony hovering between earth and moon."@en . . . . . . . "The high frontier : human colonies in space" . "The high frontier : human colonies in space"@en . . . . . . . "The high frontier; human colonies in space"@en . . . . . . "High frontier: human colonies in space"@en . "Space Stations." . . "Space stations." . "Siedlung." . . "Buitenaards leven." . . "Weltraumkolonisierung." . . "Ruimtekolonies." . . "Ruimtevaart." . . . . "Zukunftsplanung." . . "Colonies spatiales." . . "Weltraum." . . "Space colonies." . .