. . . . "Point of no return" . . . . . . "This book tells the story of how the Twentieth Air Force was built into the most advances strategic weapon of World War I and the prototype for today's Strategic Air Command. The author recounts how the B-29s had to be designed, built, tested, and proved in an impossibly short time, and how the men had to overcome the geographical obstacles they faced." . . . . . . . . "Point of no return : the story of the Twentieth Air Force" . "Point of no return : the story of the Twentieth Air Force"@en . . . "Point of no return the story of the Twentieth Air Force"@en . . . "Point of no return : the story of the twentieth air force" . "History" . "History"@en . . . "Point of no return : The story of the Twentieth Air Force" . . . . "Guerre mondiale, 1939-1945 Opérations aériennes américaines." . . "Guerre mondiale, 1939-1945 Japon." . . . . "1912 - 1945" . . "Japon" . . "Japan" . .