Phoebus, no place or date, believe circa 1974.  Folio soft cover, 64 numbered pages.  Good plus; some edge and cover wear, bit of soil and rubs, light reading creases.  Interior clean and unmarked; colour and black & white photos/illustrations.  Purnell’s History of the World Wars Special.  ‘This book traces the development of the bomber from its earliest beginnings, when pilots dropped steel darts, artillery shells, and cans of kerosene on enemy troops, through the brief but spectacular career of the Zeppelin and the development of the specialised heavy bomber.  We follow this development up to 1939, when the foundations were being laid for the giant bombers of the Second World War.’ (from 1^st page)