A guide for epidemiological studies of oral manifestations of HIV infection / 
S.L. Melnick [et al.]. 
 - Geneva :  World Health Organization,  1993. 
<br/><br/>Includes bibliographical references 
<br/><br/><label>ISBN: </label>92-4-154453-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Epidemiology--Methodology<br/>HIV infections<br/>Oral manifestations of general diseases