Dubey, Akhila Nand, Priyankar Raha, and Arnab Kundu. “Response of Soil Applied Lignite Coal Derived Humic Acid on Yield and Quality of Spinach (Spinacia Oleracea L.)”. Vegetable Science 46, no. 1&2 (December 31, 2019): 72–77. Accessed July 8, 2024. https://isvsvegsci.in/index.php/vegetable/article/view/246.