Field studies on the seasonal incidence of Nematodirus battus and N. filicollis in sheep.
D000049:Acanthocephala; D000818:Animals; D015994:Incidence; D009348:Nematoda; D057808:Nematodirus; D012621:Seasons; D012756:Sheep / Q000469:parasitology; D034561:Sheep, Domestic
NEMATODA; SHEEP/parasitology