1. 
   HPSA
   High Performance Switch Actuator. The electric point machine in a HPSS installation.
   Found op http://www.scot-rail.co.uk/page/Glossary
   
   
2. 
   HPSA
   See Health Professional Shortage Area.
   Found op http://www.pohly.com/terms_h.html
   
   
3. 
   HPSA
   Health Professional Shortage Area
   Found op http://www.encyclo.co.uk/local/20895
   
   
4. 
   hpsa
   1) Health professional shortage area
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/hpsa/1
   
   

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