Authors
Andrzej Hutorowicz
Laboratory, Inland Fisheries Institute in Olsztyn,, Olsztyn, Poland
Marcin Białowąs
Laboratory, Inland Fisheries Institute in Olsztyn,, Olsztyn, Poland
Bronisław Długoszewski
Laboratory, Inland Fisheries Institute in Olsztyn,, Olsztyn, Poland
Lech Doroszczyk
Laboratory, Inland Fisheries Institute in Olsztyn,, Olsztyn, Poland