Sheikha, Saad Al Abdel Kareem. “Physiological Studies for Different Concentration from Biochikol 020 PC (Chitosan) on Bean Plant”. Journal of Asian Scientific Research 1, no. 2 (June 15, 2011): 73–86. Accessed July 3, 2024. https://archive.aessweb.com/index.php/5003/article/view/3276.