Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym YB-40 is...

YB-40 is

  • Prototype B-17 conversion to bomber escort gunship

YB-40 is also in:

Acronym Definition Searched: 38731 BCDT WFCU RP RFP TRA PZK CD BF WWV GGEA RCLB OCO WWHR PIT