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D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C3/00—Pulping cellulose-containing materials
D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
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Inorganic Chemistry
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Chemical And Physical Treatments For Wood And The Like
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GB191029087D1909-12-141910-12-14Improvements in and relating to the Manufacture of Wood Pulp.
ExpiredGB191029087A
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