Cook, Albert M.,  1943- <br/><br/>
Assistive technologies :  principles and practice / 
Albert M. Cook, Janice M. Polgar. 
 - Fourth edition. 
 - xi, 480 pages :  illustrations ;  29 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780323096317  RM371.02 032309631X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Self-help devices.<br/>Disabled Persons--rehabilitation.