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 .
Includes bibliographical references.
Emigration and immigration--Mathematical models--United States WPSOTH