MIA: Encyclopedia of Marxism: Glossary of Periodicals
A theoretical journal of the Moscow Regional Bureau, of the Moscow Committee and (from No. 2) of the Moscow District Committee of the R.S.D.L.P.(B.); published in Moscow from May 20 (June 2) to October 29 (November 11), 1917.
New York. Theoretical Journal of the Spartacist League. Published in journal format and in newsprint form the magazine has appeared irregularly for 50 years.