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- [2] Efficiency and productivity of wage and salary earners in the chemical industries - An attempt to obtain an answer JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY-US, 1919, 11 (05): : 727 - 738
- [8] Freedom for Wage Earners ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1938, 200 : 185 - 209
- [10] Profit Sharing for Wage Earners ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1938, 198 : 235 - 235