Efficiently Treated Sewage Sludge Supplemented with Nitrogen and Potassium Is a Good Fertilizer for Cereals

@inproceedings{Tontti2017EfficientlyTS,
  title={Efficiently Treated Sewage Sludge Supplemented with Nitrogen and Potassium Is a Good Fertilizer for Cereals},
  author={Tiina Tontti and H. Poutiainen and Helvi Heinonen-Tanski},
  year={2017}
}

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