ROOZBAHANI, Arash. Effect of Soil Application of Humic Acid and Fluvic Acid on Agronomic traits of Barley. Journal of Crop Nutrition Science, [S. l.], v. 1, n. 2, p. 12–17, 2015. Disponível em: https://oiccpress.com/jcns/article/view/5817. Acesso em: 1 aug. 2026.