What does BDJ stand for?

Bai - Language code (ETLW)

Banjarmasin - Indonesia - Airport symbol (OAG)

Big D's Boats, Mounds, OK - Manufacturer code for watercraft hull identification number (USCG)

Boulder Junction, WI - Location identifier - FAA (FAAL)

Brans-Dicke-Jordan - Scalar-tensor theory

British Dental Journal - A publication