Dorland's pocket medical dictionary / 
Consult.: Bernard D. Davis and others. 
 - 21st ed. 
 - Philadelphia :  W.B. Saunders Company,  1968. 
 - xx, 699 p. 
<br/><br/><label>ISBN: </label>0-7216-3161-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public health