KEYNOTE PRESENTATION AND ROUNDTABLE SESSION 4. CRAYFISH PATHOLOGY IN EUROPE:PAST, PRESENT AND A PROGRAMME FOR THE FUTUREB. F. EDGERTON and J. JUSSILABull. Fr. Pêche Piscic., 372-373 (2004) 473-482DOI: https://doi.org/10.1051/kmae:2004021