World Health Organization  <br/><br/>
The provision of spectacles at low cost.   

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 - Geneva  W H O  1987 
 - 32 p.  26 cm. 
 -   .
<br/><br/>  
<br/><br/>  Spectacles 
<br/><br/><label>ISBN: </label>92 4 156108 4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Spectacles
<br/><br/><label>Dewey Class. No.: </label>WM350  / WHO