1. 
   PPG
   PT Parade Games
   Found op http://en.wikipedia.org/wiki/List_of_U.S._government_and_military_acronyms
   
   
2. 
   ppg
   abbreviation: pounds per gallon. ppm abbreviation: parts per million
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   PPG
   Pulses Per Group
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
4. 
   PPG
   A Planning Policy Guidance note for England. PPG22 covers renewable energy and the planning system. The guidance notes are in the process of being replaced by Public Planning Statements (PPS).
   Found op http://www.dti.gov.uk/energy/energy-glossary/page24579.html
   
   
5. 
   ppg
   1) Hoops stat
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/ppg/1
   
   

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