00353nam a2200097Ia 4500008004100000082001600041100002700057245013300084264002800217300001000245200527s9999||||xx |||||||||||||| ||und||  a616.855 SIL  aSilverman, Franklin H. 0aCommunication for the Speechless: An Introduction to Nonvocal Communication Systems for the Severely Communicatively Handicapped  bPrentice-Hall Incc1980  a291p.