By Thomsen H.A.   Nielsen M.K.   Nielsen E.H.   Hansen N.P.   in Water Science and Technology

ISSN:0273-1223|37|12|157-164

Elsevier‎(1998)‎

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By Permin A.   Yelifari L.   Bloch P.   Steenhard N.   Hansen N.P.   Nansen P.   in Veterinary Parasitology

ISSN:0304-4017|87|1|63-71

Elsevier‎(1999)‎

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