In the early 1930s , Kidrič was persuaded by the communist publicist Vlado Kozak to join the Communist Party of Yugoslavia . He soon rose to high political posts in the Drava Banovina and was among the founders of the autonomous Communist Party of Slovenia in 1937 . Besides Milovan Đilas and Ivan Milutinović , Kidrič was one of the major exponents of the policy of leftist errors
leftist errors
Leftist errors (Yugoslavia)
Boris Kidrič