(N~ELOWEK PRIRODA \KONOMIKA (B/s - (NkORSAKOW(B, (NaLEKSANDR qKOWLEWI^(B.s ((NsWERDLOWSK (B:s (NsRED(B.-(NuRAL(B. (NKN(B. (NIZD(B-(NWO(B,s, 1974)
Keywords: (N|KONOMI^ESKAQ GEOGRAFIQs