Shalavina, Ekaterina, Aleksandr Briukhanov, Sari Luostarinen, Alexey Trifanov, Natalia Kozlova, Eduard Vasilev, and Igor Subbotin. “Revision of the Total Nitrogen and Phosphorus Content in a Cattle Manure-Based Organic Fertiliser in North-West Russia”. Agricultural and Food Science 30, no. 2 (June 30, 2021): 44–52. Accessed October 21, 2021. https://journal.fi/afs/article/view/99191.