title: Studies on the bionomics of eggs and infective larvae of Ostertagia ostertagi and Cooperia oncophora in soil.
mesh_terms: D000818:Animals; D002417:Cattle; D004463:Ecology; D004781:Environmental Exposure; D005260:Female; D007814:Larva; D010063:Ovum; D012988:Soil Microbiology; D014251:Trichostrongyloidea / Q000254:growth & development*