title: On the possible role of earthworms in the transmission of Ostertagia ostertagi third-stage larvae from feces to soil.
mesh_terms: D000818:Animals; D002417:Cattle; D005243:Feces / Q000469:parasitology*; D009835:Oligochaeta / Q000469:parasitology*; D010029:Ostertagiasis / Q000469:parasitology; D012987:Soil; D014251:Trichostrongyloidea / Q000502:physiology*
chemical_list: D012987:Soil