A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. H Vol. 13. } Improved Gang Plow. New Mineral. Patent Zinc Smelting. Economic Magnesium Eight., scientific american, 1865-09-23

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A WEEKLY JOURNAL OF PRACTICAL INFORMATION ART SCIENCE MECHANICS CHEMISTRY AND MANUFACTURES. H Vol. 13. } Improved Gang Plow. New Mineral. Patent Zinc Smelting. Economic Magnesium Eight., scientific american, 1865-09-23

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