UNE-CEN/TR 13097:2010 Characterization of sludges - Good practice for sludge utilisation in agriculture (Endorsed by Asociación Española de Normalización in October of 2019.)
2019UNE-CEN/TR 13097:2010 Characterization of sludges - Good practice for sludge utilisation in agriculture (Endorsed by Asociación Española de Normalización in October of 2019.)