Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym 5B1 is...

5B1 is

  • John H.Boylan State Island Pond Airport, Island Pond, Vermont USA

5B1 is also in:

Acronym Definition Searched: HPC 60970 CSAC WKLR FISIP LCP(R) TB VPS 52147 MITS CIFS UMO 32228 350 VSG