Ida Bagus Komang Mahardika, Made Sri Yuliartini, and I Gusti Made Arjana. “The Effectiveness of Coal-Based Organic Fertilizer and Cow Manure on Yield Quality of Several Tomato Varieties (Lycopersicum Esculentum L.)”. Agriwar Journal , Vol. 1, no. 2, Dec. 2021, pp. 37-43, doi:10.22225/aj.1.2.2021.37-43.