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Frost, Lori.

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.



People with mental disabilities
Communication devices for people with disabilities.
Autistic children
Autistic children
Nonverbal communication in children.

HV3004.5 / .F76 2002