1. 
   PIO-P
   acronym: PIO for Participant Training
   Found op http://cdiac.ornl.gov/pns/acronyms.html#P
   
   
2. 
   Pioneer Group
   The Pioneer Group were a number of red-figure vase painters working in Kerameikos or the potters` quarter of Athens around the beginning of the 5th century BCE. Characterized by John Boardman as perhaps the first conscious art movement in the western tradition, the group comprised the painters Euph...
   Found op http://en.wikipedia.org/wiki/Pioneer_Group
   
   
3. 
   Pioneer Pacific Camp
   Pioneer Pacific Camp (PPC) is an evangelical Christian childrens camp owned and operated by a parachurch organization called Inter-Varsity Christian Fellowship of Canada. Pioneer Pacific is located at North Cove on Thetis Island British Columbia. The camp was first founded in 1955 when {convert|76|...
   Found op http://en.wikipedia.org/wiki/Pioneer_Pacific_Camp
   
   
4. 
   Pioneer Railcorp
   Pioneer Railcorp ({OTCPink|PRRR}) is a holding company for a number of American short-line railroads. Other subsidiaries offer locomotive and freight car leasing to its own railroads and to third parties, and also freight car cleaning. Pioneer also has interests in real estate and newsletter publis...
   Found op http://en.wikipedia.org/wiki/Pioneer_Railcorp
   
   
5. 
   Piotrków Voivodeship
   Piotrków Voivodeship (województwo piotrkowskie) was a voivodeship, or unit of administrative division and local government, in Poland from 1975 to 1998, superseded by Łódź Voivodeship. Its capital city was Piotrków Trybunalski. ==Major cities and towns (population in 1995)== ...
   Found op http://en.wikipedia.org/wiki/Piotrków_Voivodeship
   
   
6. 
   Piotrów, Lubusz Voivodeship
   Before 1945 the area was part of Germany (see Territorial changes of Poland after World War II). ...
   Found op http://en.wikipedia.org/wiki/Piotrów,_Lubusz_Voivodeship
   
   
7. 
   Piotrowice, Lubusz Voivodeship
   Before 1945 the area was part of Germany (see Territorial changes of Poland after World War II). ...
   Found op http://en.wikipedia.org/wiki/Piotrowice,_Lubusz_Voivodeship
   
   
8. 
   Piotrówka, Opole Voivodeship
   Before 1945 the area was part of Germany (see Territorial changes of Poland after World War II). Since 2006 the village has been officially bilingual in German and Polish, a large German population having remained behind when Silesia was annexed by Poland after WWII. The village has a population of...
   Found op http://en.wikipedia.org/wiki/Piotrówka,_Opole_Voivodeship
   
   

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