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23. Mental handicap in Rhodesian African children. Axton JH, Levy LF. Dev Med Child Neurol; 1974 Jun; 16(3):350-5. PubMed ID: 4276341 [No Abstract] [Full Text] [Related]
24. The relevance of Vygotsky's theory of the "zone of proximal development' to the assessment of children with intellectual disabilities. Rutland AF, Campbell RN. J Intellect Disabil Res; 1996 Apr; 40 ( Pt 2)():151-8. PubMed ID: 8731472 [Abstract] [Full Text] [Related]
30. A comparison of the functional and intellectual performance of phenylketonuric, anoxic, and Down's syndrome individuals. Grotz RT, Henderson ND, Katz S. Am J Ment Defic; 1972 May; 76(6):710-7. PubMed ID: 4260595 [No Abstract] [Full Text] [Related]
37. Issues in mental retardation in Canada: transitions. Kysela GM, Anderson D, Marfo K. Appl Res Ment Retard; 1981 May; 2(2):145-63. PubMed ID: 7052754 [No Abstract] [Full Text] [Related]