TY  - ELEC
A1  - Manson, S.
A1  - Schroeder, J.
A1  - Van Riper, D.
A1  - Ruggles, S.
T1  - IPUMS National Historical Geographic Information System: Version 14.0
Y1  - 2019
DO  - 10.18128/D050.V14.0
PB  - University of Minnesota
CY  - Minneapolis

ER  -