title: Effect of the parasite Wohlfahrtia vigil on Microtus townsendii populations.
mesh_terms: D000818:Animals; D003411:Arvicolinae; D004175:Diptera; D009198:Myiasis / Q000453:epidemiology / Q000662:veterinary*; D011153:Population; D012376:Rodent Diseases / Q000453:epidemiology*; D012377:Rodentia