Removal of vectors of cercarial dermatitis from the littoral zone: Machines used in Lake Annecy for crushing up and collecting snails creeping on the ground.
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{{Information |Description=Treatment of lake shore against vectors of cercarial dermatitis: Machines used on Lake Annecy for crushing up and collecting snails creeping on mud. |Source=self-made |Date=June 2003 |Author= LiborMikes |Perm