Nutrition and working efficiency. 

 - Rome,  [1966] 
 - Freedom from Hunger Campaign. Basic study ;  no. 5 .
 - Freedom from Hunger Campaign. Basic study ;  Freedom from Hunger Campaign. Basic study ;  no. 5 .
<br/><br/> "First printing, 1962; third ... 1966."  First published in 1962. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nutrition.<br/>Performance.