Wittrock, Björn., <br/><br/>
Policy as a moving target :  a call for conceptual realism / 
Bjorn Wittrock, Peter deLeon 
 - iii, 28 pages ;  28 cm. 
 - The Rand paper series ;  P-7118-RGI .
 - The Rand paper series ;  P-7118-RGI .
<br/><br/>Includes bibliographical references: pages 23-28 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Policy sciences.