Mitchell, Bridger M., <br/><br/>
Economic issues in usage-sensitive pricing / 
Bridger M. Mitchell   
 - 12 pages ;  28 cm. 
 - The Rand paper series;  P-6530 .
 - The Rand paper series;  P-6530  .
<br/><br/>Includes bibliographical references: page 21 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone--Rates. <br/> Telephone--Economic aspects