00326nam a2200097Ia 4500008004100000082002100041100004300062245008700105264002600192300001000218200526s9999||||xx |||||||||||||| ||und||  a618.928 55 COC C  aCockerill, Helen , Carroll-Few, Lesley 0aCommunicating Without Speech: Practical Augmentative and Alternative Communication  bMac Keity Pressc2001  a185p.