Blood groups in Rhodesia.
D000017:ABO Blood-Group System; D001741:Black or African American; D044383:Black People; D006801:Humans; D008297:Male; D012204:Rh-Hr Blood-Group System; D044465:White People; D015030:Zimbabwe
D000017:ABO Blood-Group System; D012204:Rh-Hr Blood-Group System