(NkTO(B, (NKOGDA(B, (NPO^EMU(B? :s (NdLQ SREDNEGO I STAR[EGO [KOLXNOGO WOZRASTA (B/s - (N}EPKINA(B-(NmIRSKAQ(B, (N`(B.(Nb(B.s ((NmOSKWA (B:s (NdETGIZ(B,s, 1961)
Keywords: (NnAUKAs; (N|NCIKLOPEDIQs