The Development of "Left Communism" Until 1921: Soviet Russia, Poland, Latvia and Lithuania - Ronald I. Kowalski Ronald I. Kowalski's doctoral thesis on left communism in Russia, Poland, Latvia and Lithuania.
The Left Communist Movement of 1918 - Ronald I. Kowalski An analysis by academic, Kowalski, on the early internal party opposition in the Bolshevik Party by the communist left, against the signing of Brest Litovsk agreement with Germany.
