...When a fluke finds asheep that suits him, that fluke lives upon him... 
Grant Allen 「An African Millionaire」
...) The Liver Fluke (fasciola hepatica or distomahepaticum, Fig...
Ambrose Blacklock 「A Treatise on Sheep:」
...Railliet and others have recently recommended the application of lime tofluky pastures, having discovered that very weak solutions are destructive notonly to fluke embryos but to snails...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
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