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Nineteenth Century Wage Trends : Douty, H[arry] M[ortimer]
Douty, Harry Mortimer, (1970)
City size effects, trends, and policies
Hoch, Irving, (1976)
The structure of income in Communist China
Schran, Peter, (1961)
Intercity wage and cost-of-living differentials in the United States, 1889 - 1939
Wilson, Lonny Lloyd, (1973)