(NtIFLOPEDAGOGIKA (B:s (NsBORNIK DOKLADOW (B/s - (NkOWALENKO(B, (Nb(B.(Ni(B.s; (NlENINGRADSKIJ INSTITUT PEDAGOGIKI apn rsfsrs ((NmOSKWA (B:s (NiZD(B-(NWO apn rsfsr(B,s, 1956)
Keywords: (NtIFLOPEDAGOGIKAs