000 004910000a22001330004500
001 20895
090 _a20895
100 _a20190520 frey50
101 _aeng
200 0 1 _aFish diseases : signals for a diseased environment
_fA. D. Vethaak
317 _aIPIMAR
463 _a<Proceedings of North Sea seminar, 2, Rotterdam, 1-3 Oct. 1986> : <reasons for concern> / ed. G. Peet. - Amsterdam : Werkgroep Noordzee, 1987. - Vol. 2, p. 49-61 : il. ; 30 cm
676 _a202 v
700 _aVethaak,
_bA. D.