Use of talcum in the manufacture of paper and a method for the same
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Agent for biological purification of waste water and device therefor
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Improved method for purifying waste water using activated sludge to increase purification yields
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Process for decreasing the sludge volume in biological wastewater purification and composition therefor
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process of treating waste water containing oils and fatty substances
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Device for sealing the rotor shaft housing through a pressure-sealed cell wheel lock
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Method for treating waste products based on human and / or animal excrements, a medium talk and zeolite based on this method, and fertilizer produced by this method
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Livestock and method for their production
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Air-gap interference pigments, manufacture and use thereof
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Use of fillers coated with trialkoxysilanes
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Use of silicatic fillers coated with trialkoxysilanes
