| 11. | On quitting the army, Kessel studied leather tanning and industrial chemistry in Moscow 1921-22.
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| 12. | The earlier works included interventions in sericulture, vegetable leather tanning, fish aggregation device etc.
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| 13. | Crop-based industrial chemicals include enzymes used in the pulp paper industry and in leather tanning.
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| 14. | Sections of the river are currently contaminated by industrial waste, mainly from the leather tanning industry.
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| 15. | Harrisons is the world's biggest producer of chromium chemicals, used in leather tanning, metal finishing and pigments.
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| 16. | It is used in leather tanning.
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| 17. | Befitting their nomadic origin, the Khitans were prized for their skills in hunting, butchering, skinning, and leather tanning.
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| 18. | The economy is dependent on leather tanning industry, earning it the nickname " Leather City of South India ".
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| 19. | Adams was married to George Adams, who was affluent and served as president of the American Leather Tanning Company.
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| 20. | Leather tanning and the exploitation of coal seams made valuable contributions to the economy of Kirkburton for several centuries.
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