Sommer, Alfred <br/><br/>
Vitamin a deflciency and its consequences : a field guide to detection and control 

 - 3rd ed 
 - World health organization, Geneva  1995 
 - vii,69 
<br/><br/><label>ISBN: </label>92 4 1544778 3 
<br/><br/><label>Dewey Class. No.: </label>612.399 Som