By Stephenson Jennifer   Linfoot Ken   in Journal of Intellectual & Developmental Disability

ISSN:1469-9532|20|4|263-286

Informa Healthcare‎(1995)‎

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By Stephenson Jennifer   Linfoot Ken   in Augmentative & Alternative Communication

ISSN:0743-4618|12|4|244-256

Informa Healthcare‎(1996)‎

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By Stephenson Jennifer   Linfoot Ken   Martin Andrew   in International Journal of Disability, Development and Education

ISSN:1465-346X|47|3|225-235

Routledge Ltd‎(2000)‎

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By Linfoot Ken   Martin Andrew J.   Stephenson Jennifer   in International Journal of Disability, Development and Education

ISSN:1465-346X|46|2|223-246

Routledge Ltd‎(1999)‎

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