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J Learn Disabil
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Article
in English
| MEDLINE
| ID: mdl-521688
2.
Rev Gaucha Odontol
; 19(1): 8-24, 1971.
Article
in Portuguese
| MEDLINE
| ID: mdl-5285540
3.
J Abnorm Psychol
; 73(5): 492-9, 1968 Oct.
Article
in English
| MEDLINE
| ID: mdl-5722390