S. Saleh, Farah. “Effect of Soil Pollution With Different Cadmium and Lead Concentrations on Carbohydrates, Proteins and Some Nutrient Metals in Sunflower (Helianthus Annuus L.) Plants”. Rafidain Journal of Science 23, no. 8 (December 1, 2012): 41–55. Accessed September 28, 2025. https://jwups.uomosul.edu.iq/index.php/rsci/article/view/46743.