Guidelines on principles of a system of price and quantity statistics. 

 - New York  United Nations          1977 
 - v,25p.  cm. 
<br/><br/> Statistical paper series M, no. 59. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X:76:(B28).N77, N7/UN