“Synthesis and Characterization Complexes of Cobalt(II), Nickel(II), Copper(II) and Palladium With [N’-{2-(4-Isobutyl-Phenyl)-Propionyl} Pyridine-4-Carbohydrazide]”. 2023. Tikrit Journal of Pure Science 22 (2): 92-98. https://doi.org/10.25130/tjps.v22i2.632.