ISSA, Y. M. ;ISSA, R. M. ;ISSA, F. M.2019-04-222019-04-221303-6017http://hdl.handle.net/20.500.12575/61814https://doi.org/10.1501/Commub_0000000270SPECTROPHOTOMETRY STUDIES ON SOME l-(ARYLAZO)- PROPANE-2 -ONE.369380