Informations importantes : Arrêt du Club R (13 août) et Cessation d'Activité (30 septembre)
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Help-Wanted Advertising As An Indicator Of The Demand For Labor
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Prices And Inflation During The American Revolution, Pennsylvania, 1770-1790
Trends In Foundry Production In The Philadelphia Area
Wholesale Prices In Philadelphia, 1784-1861
Wage Methods And Selling Costs
Wage Rates And Working Time In The Bituminous Coal Industry, 1912-1922
