National Research Council <br/><br/>
US science and technology for development   A contribution to the 1979 UN Conference      

 -  1979 
<br/><br/><label>Standard No.: </label>1413 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>X:327.73'N7, L9