[Placental circulation in some ruminants. Morpho-structural study].
D000818:Animals; D001775:Blood Circulation; D002417:Cattle / Q000502:physiology*; D005260:Female; D010920:Placenta / Q000098:blood supply*; D011247:Pregnancy; D011270:Pregnancy, Animal; D012756:Sheep / Q000502:physiology*
Il circolo placentare in alcuni ruminanti. Studio morfo-strutturale