Uzoukwu, B.A.Adiukwu, P.U.2010-07-062010-07-061996Journal of the National Science Council of Sri Lanka, 24(3):p.221-225https://dl.nsf.gov.lk/handle/1/5874UVPhysical ChemistrySpectroscopyChemistrySpectroscopic studies of Th(IV), La(III) and Pb(II) complexes of 4-trifluoroacetyl and 4-trichloroacetyl derivatives of 3-methyl-1-phenylpyrazol-5-oneArticle