nature, assessment and management Cannito, Michael P [editor] Kathryn M. Yorkston [editor] David R. Beukelman [editor] text London Brookes Publishing Co 1998 monographic 340 p. Edited by Michael P. Cannito ,. Kathryn M. Yorkston and David R. Beukelman Psychiatry Speech & Language Disorders & Therapy 616.855 CAN 9781557663269