[The incidence of mongolism among the natives of Africa and other indigenous black and dark-skinned races with special reference to the Union of South Africa].
D000349:Africa; D001741:Black or African American; D044383:Black People; D004314:Down Syndrome / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D044382:Population Groups; D044469:Racial Groups; D013019:South Africa
MONGOLISM/statistics