Saquib, Mohammad. “Effect of Coal Smoke Pollution on the Biomass and Chlorophyll Pigments of <i>Brassica juncea< I>”;. Ecoprint: An International Journal of Ecology 15 (June 3, 2009): 1–6. Accessed February 5, 2026. https://nepjol.info/index.php/ECO/article/view/1935.