Removal of Nitrate from Groundwater by Using Effective Microorganisms (EM). Tikrit j. eng. sci. [انترنت]. 31 مارس، 2013 [وثق 9 نوفمبر، 2026];20(1):39-50. موجود في: https://tj-es.com/ojs/index.php/tjes/article/view/392