Include cancelled standards
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U44-041
Products used in agriculture. Sludge resulting from the treatment of sewage. Types and specifications. - Produits utilisés en agriculture. Boues des ouvrages de traitement des eaux. Dénominations et spécifications.
WITHDRAWN
Fertilizers and soil conditioners. Sludge resulting from the treatment of sewage. Denominations and specifications. - Matières fertilisantes
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