Clark, Ximena  <br/><br/>
Explaining U.S. Immigration 1971-98 / 
Ximena Clark, Timothy J. Hatton & Jeffrey G. Williamson 
 - Washington D.C. :   World Bank (WB) ,  2004 
 - 35p. :   ill. ;   30 cm.  
 - Policy Research Working Paper  No. 3252 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Emigration and immigration--Mathematical models--United States<br/>WPSOTH
<br/><br/><label>Gov. Doc. Class. No.: </label>UN WB PRWP-3252