(NvIZNX PRESNYH WOD(B: (NvIWOTNYE I RASTENIQ PRESNYH WOD(B, (NIH VIZNX(B, (NRASPROSTRANENIE I ZNA^ENIE DLQ ^ELOWEKA (B:s (NpER(B. (NS NEM(B. /s - (NlAMPERT(B, (Nk(B.s; (NhOLODKOWSKIJ(B, (Nn(B.(Na(B.s; (NkUZNECOW(B, (Ni(B.(Nd(B.s; (NhOLODKOWSKIJ(B, (Nn(B.(Na(B.s ((NsANKT(B-(NpETERBURG (B:s (NiZD(B. (Na(B.(Nf(B. (NdEWRIENA(B,s, 1900)
Keywords: (NbIOLOGI^ESKIE NAUKIs