This book is an original volume (not a reprint) of one of the definitive books in aviation. It is divided into 5 parts : A The World's Aeronautical Progress - Historical (Civil Aviation) B Historical (Service Aviation) C All the World's Aeroplanes D All the World's Aero-Engines E All the World's Airships In addition it carries many interesting, informative & pictorial advertisements relating to the aviation industries.