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- Rights > In copyright (remove)
- Format > manuals (instructional materials) (remove)
- Subject > B-17 bomber--Flight crews--Handbooks, manuals, etc. (remove)
- Subject > Boeing airplanes--Flight crews--Handbooks, manuals, etc. (remove)
- Subject > Boeing Y1B-17 Flying Fortress (Model 299B, YB-17, B-17) (remove)