| Description | Piatnitsky, O., 'Urgent Questions of the Day. Unemployment Movement, Factory Organization, Fluctuating Membership', Modern Books Ltd. (London). 'This pamphlet is a slightly revised and abbreviated report of a speech delivered by Comrade O. Piatnitsky, on the first item of the Agenda of the XI Plenum of the E.C.C.I. [Executive Committee of the Communist International] on March 31st, 1931'. |