TANNING MATERIALS 



87 



VALUE 



BIBLIOGRAPHY 



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Census Bureau, Washington. Tanbark and Tanning Extract. Forest Products. 

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Development of the Tanning Industry in the United States. Leather Manufacturer. 

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GANNON, FRED. A. The Development of the Tanning Industry. Leather Manu- 

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MELL, C. D. Tanbark Oak, Leather Manufacturer. Vol. 22, pp. 373, 374. 



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