title: Systematics of the eimerian parasites from North American snakes of the family Colubridae, and their prevalence in the colubrids of Iowa.
mesh_terms: D000818:Animals; D003048:Coccidiosis / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D004539:Eimeria / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification; D007484:Iowa; D012911:Snakes / Q000469:parasitology*