00373nam a2200133 a 450000500170000008200130001710000160003011000710004624500330011726000610015030000070021165300100021865300110022820251203115423.0  a510bJEE  aJeevagan, S  aPatil H.P Dept of Mathematics, Pondicherry University, Pondicherry  aStudies on spectra of graphs  aDept of Mathematics, Pondicherry University, Pondicherry  a68  aMaths  aM.Phil