1.
D. Otten, H. F. A. Van den Weghe. Nitrogen and phosphorus management on pig farms in Northwest Germany – nutrient balances and challenges for better sustainability. African Journal of Pig Farming [Internet]. 2013 Oct. 26 [cited 2025 May 14];1(1):1-10. Available from: https://elixirpublishers.in/index.php/ajpf/article/view/611