TY - BOOK TI - Augmentative & alternative communication: supporting children and adults with complex communication needs AU - Beukelman, David R. AU - Mirenda, Pat PB - Paul H. Brookes Pub PY - c2013 CY - Baltimore, Md CY - London SN - 1598571966 SN - 9781598571967 U3 - b1565512 ET - 4th ed ER -