Perkins, William H. <br/><br/>
Speech pathology : an applied behavioral science 

 - 2d ed. 
 - Saint Louis   C. V. Mosby Co.  1977 
 - x, 459p.  ill.  
<br/><br/><label>ISBN: </label>0801637856 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Speech disorders
<br/><br/><label>LC Class. No.: </label>MED RC423  / P43