(NwE^ERA ZANIMATELXNOGO MIROWEDENIQ (B/s - (NpRQNI[NIKOW(B, (Nw(B.(Ni(B. s ((NmOSKWA (B;s (NlENINGRAD (B:s (NrABOTNIK PROSWE]ENIQ(B,s, 1930)
Keywords: (NmIROWEDENIE (B- (NpRAKTI^ESKOE RUKOWODSTWOs