Authors
Marek Trella
Inland Fisheries Institute in Olsztyn, Department of Fisheries Bioeconomics, Olsztyn, Poland
Tomasz Czerwiński
Inland Fisheries Institute in Olsztyn, Department of Fisheries Bioeconomics, Olsztyn, Poland
Arkadiusz Wołos
Inland Fisheries Institute in Olsztyn, Department of Fisheries Bioeconomics, Olsztyn, Poland