Hashim, F.G., Salman, T.A., Al-Baghdadi, S.B., Gaaz, T. and Al-Amiery, A. 2020. Inhibition Effect of Hydrazine-Derived Coumarin on a Mild Steel Surface in Hydrochloric acid . Tribologia - Finnish Journal of Tribology. 37, 3–4 (Dec. 2020), 45–53. DOI:https://doi.org/10.30678/fjt.95510.