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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
D21C3/22—Other features of pulping processes
FR1005773D1947-09-221947-09-22
Improvements in the treatment of plants to extract cellulose
ExpiredFR1005773A
(en)