RUSSELL, J K Maternal and foetal hazards associated with twin pregnancy. [electronic resource] - The Journal of obstetrics and gynaecology of the British Empire Apr 1952 - 208-13 p. digital Publication Type: Journal Article ISSN: 0307-1871 Standard No.: 10.1111/j.1471-0528.1952.tb04116.x doi Subjects--Topical Terms: FemaleHumansPregnancyPregnancy, MultiplePregnancy, Twin