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truly mass-produced four engined heavy bomber. The B-17 was used as the backbone of the US Army Air Force’s strategic bomber...... more
This manual is a guide for the instruction of students who are learning and acquiring skill in audib... more
could loft a maximum load of 6,000 pounds of bombs. Originally printed by North American and the U.S. Army Air Force, this...... more
static force design procedure....... more
This manual establishes criteria for improving the engineering properties of soils used for pavement... more