%0 Journal Article %T THE ULTRASTRUCTURE OF THE ARTERIAL SUPPLY OF THE HUMAN PLACENTA IN EARLY AND LATE PREGNANCY %A Sheppard, B. L. %A Bonnar, John %J BJOG : An International Journal of Obstetrics & Gynaecology %V 81 %N 7 %P 497-511 %@ 1470-0328 %D 1974-07-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve