![]() | Language and Communication in Mental Retardation: Development, Processes, and intervention Sheldon Rosenberg, Leonard Abbeduto |
![hidden image for function call](https://upload.wikimedia.org/wikipedia/commons/c/ca/1x1.png)
![]() | Language and Communication in Mental Retardation: Development, Processes, and intervention Sheldon Rosenberg, Leonard Abbeduto |