B1a

b1a may refer to:

Rockwell B-1A Lancer, U.S. USAF bomber aircraft GSR Class B1a, a steam locomotive class B1A section, a WWII counterespionage unit in the Double-Cross System (XX System) B1a cells, a type of B1 cell B1A postal code, see List of postal codes of Canada: B

See also

BA1 (disambiguation) BA (disambiguation)