Helminth Parasites and Parasitic Diseases of Sheep: II. Notes on the Effect of Winter Upon the Free-living Stages of Nematode Parasites of Sheep on the Pastures in Eastern Canada
Helminth Parasites and Parasitic Diseases of Sheep: II. Notes on the Effect of Winter Upon the Free-living Stages of Nematode Parasites of Sheep on the Pastures in Eastern Canada(English)