GBMA

AcronymDefinition
GBMAGypsum Board Manufacturers of Autralasia (Australia and New Zealand)
GBMAGreater Blue Mountains Area (Australia)
GBMAGettysburg Battlefield Memorial Association (est. 1864; Gettysburg, PA)
GBMAGrizzly Bear Management Area (various locations)
GBMAGreater Boston Metropolitan Area (Massachusetts)
GBMAGaussian Beam Mode Analysis