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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 ?
During the battlefield's 144-year history, the site has been administered by three organizations designated to preserve and protect the historic fields: the Gettysburg Battlefield Memorial Association (1864-95), the U.S.
On April 30, 1864, less than one year after the battle, the Pennsylvania legislature charted the battlefield's first preservation organization, the Gettysburg Battlefield Memorial Association (GBMA).
Since 1864, the Gettysburg Battlefield Memorial Association, the U.S.