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The Picture Exchange Communication System (PECS): What Do the Data Say?
Sulzer-Azaroff, B., Hoffman, A. O., Horton, C. B., Bondy, A., Frost, L.Volume:
24
Language:
english
Journal:
Focus on Autism and Other Developmental Disabilities
DOI:
10.1177/1088357609332743
Date:
June, 2009
File:
PDF, 222 KB
english, 2009