(NpRAKTIKUM PO ZOOLOGII POZWONO^NYHs - (NkARTA[EW n(B. (Nn(B., (NsOKOLOW w(B. (Ne(B., (N{ILOW i(B. (Na(B.s ((NmOSKWAs (NwYS[AQ [KOLAs, 1969)