Walker, Warren E., <br/><br/>
Models in the policy process : past, present, and future / 
Warren E. Walker   
 - 28 pages ;  28 cm. 
 - The Rand paper series;  P-6654 .
 - The Rand paper series;  P-6654  .
<br/><br/>Includes bibliographical references: pages 27-28 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Policy sciences--Mathematical models  <br/>Economic policy--Mathematical models.