Tkachenko, Halyna, Kurhaluk, Natalia, AND HetmaĊ„ski, Tomasz. " THE IN VITRO HEMOLYTIC ACTIVITY OF ERYTHROCYTES FROM FREE-LIVING MUTE SWAN (CYGNUS OLOR) SPREAD OUT IN GDYNIA AND SOPOT COASTS" Baltic Coastal Zone [Online], Volume 22(1 February 2019)