Sommer Alfred 1942 <br/><br/>
Vitamin A Deficiency And Its Consequences A Field Guide To Detection And Control Alfred Sommer 

 -  Geneva : World Health Organization 1995. 
 - 69 
 - Oxford Medical Publications  Blue Trunk Box 170 .
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>92415447783 9241544783