EL-BEHAIRY , M. A.;EL-SHETARY, B. A.2019-04-222019-04-221303-6017http://hdl.handle.net/20.500.12575/61815https://doi.org/10.1501/Commub_0000000271SPECTROPHOTOMETRY STUDIES ON COPPER (II) AND NICKEL (II)-O-CARBOXY-PHENYLHYDRAZO-ETHYLACETOACETATE COMPLEXES.381390