Szukana fraza: [Abstract = "The amount of organic matter and most of soil components marked have also increased. The evaluation of the usability of sludge from the town of Zielona Góra has been done in compliance with the current legal regulations. The chemical properties of the sludge under research indicate its usability for the purpose chosen. The sanitary properties make it necessary for the sludge to be processed for example by composting."]

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