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
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References in periodicals archive ?
The GBMA made a number of changes to coincide with the battle's twenty-fifth anniversary.
The association's preservation efforts were commendable; yet, hindered by a lack of money and a strict enabling legislation, the GBMA was only able to purchase land on the Army of the Potomac's battle line.
On February 11, 1895 Congress approved "An Act To Establish A National Military Park at Gettysburg, Pennsylvania" and the GBMA formally deeded its 522 acres to the U.S.