Trends and challenges in world health 

 - Geneva, Suitzerland :  WHO,  s.a. 
 - 35 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tendencias --Salud Pública 
<br/><br/><label>Dewey Class. No.: </label>362.1  / W927t