Histological typing of oral and oropharyngeal tumours / 
edited by P. N. Wahi and B. Cohen and Usha K. Luthra and H. Torloni. 
 - Geneva :  World Health Organization,  1971. 
 - 28 p. :  40 slide ill. ;  24 cm. 
 - International histological classification of tumours ;  no.4. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mouth neoplasms--Classification<br/>Mouth neoplasms--Pathology<br/>Pharyngeal neoplasms--Classification.<br/>Pharyngeal neoplasms--Pathology