American Psychological Association 
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Administrative Procedure Act 
American Psychiatric Association 
All Points Addressable 
American Planning Association 
Aerodromes Protection Agency 
Administrative Procedures Act 
Apache Railway 
Adaptive Packet Assembly 
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Allowance for Program Adjustment 
American Pharmaceutical Association 
American Plywood Association 
Appropriation Purchase Account 
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Abort Programmer Assembly 
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Acid Precipitation Act 
Air Pathway Analysis 
Aircraft Procurement, Army 
Airline Pilots Association 
Alaska Power Administration 
Allied Pilots Association 
Allowance for Project Adjustment 
Amateur Press Association 
American Psychological Association's 
Apache Railway Company 
Appropriation Purchases Account 
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