Griou, Hajar, Smail Njimat, Fouad El Fettahi, Samira Ait Lhaj Lhcen, Mohammed Aboulouafa, and Said Ibn Ahmed. 2023. “The Study of the Fertilising Power of Urban Sludge from the Dar Gueddari Wastewater Treatment Plant : Case of Maize (Zea Mays)”. Journal of Water and Land Development 56 (56):37-44. https://doi.org/10.24425/jwld.2023.143742.