Rugg, Donald <br/><br/>
The choice of journey destination :  A theoretical and empirical analysis / 
Donald Rugg 
 - California :  Rand Corporation,  1972 
 - 22 pages ;  28 cm. 
 - The Rand paper series ;  p. 4905 .
 - Rand paper series ;  p. 4905 .
<br/><br/>Includes bibliographical references.