title: [Clay-modeling test; contribution to the problem of testing the intelligence of abnormal children].
authors.forename: R
authors.initials: R
authors.lastname: HEIDRICH
authors.forename: K
authors.initials: K
authors.lastname: RETTIG
mesh_terms: D000538:Aluminum Silicates; D001927:Brain Diseases; D002648:Child; D000077215:Clay; D006801:Humans; D008607:Intellectual Disability; D007360:Intelligence; D007361:Intelligence Tests
chemical_list: D000538:Aluminum Silicates; D000077215:Clay