Sunita Duggal. “Study of Inorganic Nutrition in Plants and Criteria of Their Essentiality and Mode of Action of Micro and Macro-Nutrients”. International Journal for Research Publication and Seminar 7, no. 5 (September 30, 2016): 48–54. Accessed July 7, 2024. https://jrps.shodhsagar.com/index.php/j/article/view/866.