Pawson - Kingdoms in Conflict - New paperback or softback - X555z

Cansdale - Two Kingdoms - New paperback or softback - 10 - X555z

Kumar - INVISIBLE KINGDOM'S - paperback or softback - X555z

Caraballo - Arpa Invisible - New paperback or softback - X555z

Curwen - Invisible Continents - New paperback or softback - X555z

Niemoller - The Invisible Kingdom - New paperback or softback - X555z

Wells - Invisible Man - New paperback or softback - 10 - X555z

Eckhardt - Invisible King and His Kingdom - New paperback or softback - X555z