TY  - JOUR
A1  - Clark, T.
A1  - Hatton, T.J.
A1  - Williamson, G.J.
T1  - Explaining U.S. immigration, 1971-1998
Y1  - 2007
DO  - 10.1162/rest.89.2.359
JF  - The review of Economics and Statistics
VL  - 89
IS  - 2
SP  - 359
EP  - -373

ER  -