Walker, Warren E, <br/><br/>
A review of models in the policy process / 
Warren E. Walker   
 - 7 pages ;  28 cm. 
 - The Rand paper series;  P-6083 .
 - The Rand paper series;  P-6083  .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Policy sciences--Mathematical models  <br/>Economic policy--Mathematical models