Crystal, David,  1941- <br/><br/>
Profiling linguistic disability / 
David Crystal 
 - London :  Edward Arnold,  1982 
 - 218 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0713163542 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communicative disorders--Diagnosis<br/>Speech, Disorders of--Diagnosis