I'm in process of finding reliable source whether Bulgaria is using Long or Short System. But in high schools pupils are taught in Long System. 212.5.158.138 (talk) 06:06, 19 July 2015 (UTC)
I'm in process of finding reliable source whether Bulgaria is using Long or Short System. But in high schools pupils are taught in Long System. 212.5.158.138 (talk) 06:06, 19 July 2015 (UTC)Reply