WAVERMAN Leonard <br/><br/>
Demand for trunk telephone services in Great Britain    The significance of quality change.    

 - Canada  University of Toronto          1973 
 - 23p.  cm. 
 - Working paper series .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X36:731.56.N73, L3