TY  - BOOK
AU  - National Bureau of Economic Research Conference on Research in Income and Wealth
ED  - National Bureau of Economic Research Conference on Research in Income and Wealth
TI  - Trends in the American economyin the nineteenth ce
T2  - National Bureau of Economic Research, Studies in income and Wealth 24
U1  - X.73.M9, K0 
KW  - United States Economic Conditions
ER  -