WHO,   . <br/><br/>
International Travel and Health /   Textual Documents 

 -  W.H.O. ,   1994. 
 - 1186 ;    
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Index Terms: </label>Medical Science  Preventive and Social Medicine 
<br/><br/><label>Dewey Class. No.: </label>614  / WHO