Mahapatra, B.B. and Mishra, A.S.P. 1999. ?COMPLEXES OF Co (II), Ni (II), Cu (II), Zn (II), Cd ON-NO DONOR TETRADENTATE LIGAND (m AND Hg (m WITH. Biological Sciences - PJSIR. 42, 2 (Apr. 1999), 83–85.