[Epidemiologic studies on sterility in heifers and young cows].
D000367:Age Factors; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D005060:Europe; D005260:Female; D007247:Infertility, Female / Q000453:epidemiology / Q000209:etiology / Q000662:veterinary*; D013997:Time Factors
Epidemiologische Studien über Färsen- und Jungkuhsterilität.