The picture exchange communication system training manual /
Lori Frost and Andy Bondy ; with illustrations by Rayna Bondy.
- 2nd ed.
- Newark, DE : Pyramid Educational Products, c2002.
- 396 p. ; 28 cm.
1928598056
2003265960
People with mental disabilities Communication devices for people with disabilities. Autistic children Autistic children Nonverbal communication in children.