Inhibition of Ostertagia ostertagi at the early fourth larval stage. II. The influence of environment on host or parasite.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000503:physiopathology*; D004777:Environment; D012621:Seasons; D014251:Trichostrongyloidea / Q000254:growth & development / Q000302:isolation & purification; D014252:Trichostrongyloidiasis / Q000662:veterinary*