TY  - BOOK
AU  - Lloyd,Lyle L.
AU  - Arvidson,Helen H.
TI  - Augmentative and alternative communication: a handbook of principles and pratices 
SN  - 0205198848
PY  - 1997///
CY  - Boston
PB  - Allyn and Bacon
KW  - Communication disorders
KW  - rehabilitation
KW  - Communication Aids for disabled
N1  - Includes bibliographical references and indexes
ER  -