TY  - ELEC
A1  - Ruggles, S.
A1  - Sobek, M.
A1  - Alexander, T.
A1  - Fitch, C.A.
A1  - Goeken, R.
A1  - Hall, P.K.
A1  - King, M.
A1  - Ronnander, C. 
T1  - Integrated public use microdata series: Version 3.0
Y1  - 2004
UR  - http://usa.ipums.org/usa/
PB  - Minneapolis, MN: Minnesota Population Center

ER  -