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C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C02F3/00—Biological treatment of water, waste water, or sewage
C02F3/28—Anaerobic digestion processes
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FR358461D1905-10-121905-10-12Appareil pour la réception et la liquéfaction des matières fécales et l'épuration des eaux résiduaires
ExpiredFR358461A
(fr)