General Services Administration 
Geological Society of America 
General Services Administration's 
General Service Administration 
Government Services Administration 
general support artillery 
General Sales Agent 
General Service Administration's 
General Services Agency 
Gas Supply Assembly 
General Sales Agents 
generalized sudden approximation 
generator-state approach 
Genetics Society of America 
Geographic Service Area 
Geological Survey of Alabama 
Gerontological Society of America 
Girl Scouts of America 
Glass-Steagall Act 
Global Security Architecture 
Global Semiconductor Alliance 
Government Services Agency 
Griffonia simplicifolia agglutinin 
GSM System Area 
galactosyl human serum albumin 
galactosyl serum albumin 
Garden State Airlines 
Gay-Straight Alliance 
General Security Agreement 
General Separations Area