The work of WHO 1988 - 1989  biennial report of the director-general to the world health assembly and to the united nations 

 - Geneva  WHO  1990 
 - xiii, 265  Illustration 
<br/><br/><label>ISBN: </label>9241561335 
<br/><br/><label>Dewey Class. No.: </label>610.606  / W56