Price and quality measurement in external trade   Two studies of National practice.    

 - New York  United Nations          1983 
 - v,108p.  cm. 
<br/><br/> Statistical papers series M., no. 76 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:76:(B):5.N83, M3/UN