Van Veen, Andre G Van Veen, Marjorie Scott <br/><br/>
Vitamin a problems with special reference to less developed countries  Vitmin a xerophthalmia, and blindness : A status report in three volumes / Andre G van Veen and Marjorie Scott van Veen 

 - Washington, DC  Agency for International Development  1973 
 - V.2(62p.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Blindness<br/>Medicine<br/>Vitamin A Difficiency<br/>Vitamins