(NtREWOVNYJ SIGNAL (B:s [(No^ERKI OB OHRANE PRIRODY(B] /s - (NaLIEW(B, (NgASAN aLI rZAs ((NbAKU (B:s (NaZERNE[R(B,s, 1982)
Keywords: (NoHRANA OKRUVA@]EJ SREDY (B- (NaZssrs