Hadley, N. H.  1944- <br/><br/>
Fingernail biting :  theory, research and treatment / 
by Norman H. Hadley 
 - Lancaster :  MTP Press,  1984 
 - xii, 177 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references (p.167-172) and index 
<br/><br/><label>ISBN: </label>0852006276 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nail-biting<br/>Behavior modification<br/>Nail biting<br/>Nail biting--Therapy