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The philosophy of the labor movement a paper read before the International Labor Congress, Chicago, Ill., September, 1893
- "The philosophy of the labor movement a paper read before the International Labor Congress, Chicago, Ill., September, 1893"@en
- "The philosophy of the labor movement : a paper read before the International Labor Congress, Chicago, Ill., September, 1893"
- "The philosophy of the labor movement : a paper read before the International Labor Congress, Chicago, Ill., September, 1893"@en