title: Some observations upon the Rh factor in pregnancy.
authors.forename: C H
authors.initials: CH
authors.lastname: INGRAM
mesh_terms: D001789:Blood Group Antigens; D005260:Female; D006801:Humans; D011247:Pregnancy; D012204:Rh-Hr Blood-Group System
chemical_list: D001789:Blood Group Antigens; D012204:Rh-Hr Blood-Group System