[Fertility and milk production in cows of the Dutch-Friesian breed in the province of North-Holland].
D000367:Age Factors; D000818:Animals; D002417:Cattle; D005260:Female; D005298:Fertility; D007774:Lactation; D008892:Milk; D011247:Pregnancy; D013997:Time Factors
Vruchtbaarheid en melkproduktie bij FH-koeien in Noord-Holland.