Fawz Abdul Salam K.AL-Saffar, Abdul Razak K. Mahmood, و Najwa I. AL- Barhawi. 2023. "Comparison Between Various Strain from Klebsiella Pneumoniea on Nitrogen Fixation". Tikrit Journal of Pure Science 21 (5):30-34. https://doi.org/10.25130/tjps.v21i5.1024.