title: [Contribution to the study of the relation of endemic degeneration to prosperity and school attendance among the youth of Czechoslovakia and Moravia. I. Retarded pupils in a general primary school].
mesh_terms: D000293:Adolescent; D003604:Czechoslovakia; D006042:Goiter / Q000453:epidemiology*; D006801:Humans; D007858:Learning; D011680:Pupil
keywords: GOITER/epidemiology; LEARNING