Ask Oracle, January 31, 2012January 31, 2012, 0 Petrikau,Petrokov,Piotrkow,Piotrkow Trybunalski,Piotrków,Piotrków Trybunalski,Pjotrkova Tribunalska,Pjotrkova Tribunaļska,Pjotrkuv-Trybunal’ski,Пётркув-Трыбунальски