PINKERTON, J H Placenta circumvallata; its aetiology and clinical significance. [electronic resource] - The Journal of obstetrics and gynaecology of the British Empire Oct 1956 - 743-7 p. digital Publication Type: Journal Article ISSN: 0307-1871 Standard No.: 10.1111/j.1471-0528.1956.tb05556.x doi Subjects--Topical Terms: FemaleHumansPlacentaPlacenta DiseasesPregnancy