Dr. Dipu Kumar 1. STRUCTURAL STUDIES OF SOME COMPLEXES OF DIVALENT TRANSITION METALS WITH A TETRA-DENTATE DERIVATIVE OF HYDROXAMIC ACID. ACCENT JOURNAL OF ECONOMICS ECOLOGY & ENGINEERING ISSN: 2456-1037 SIF:8.20, Peer Reviewed and Refereed Journal, UGC APPROVED NO. 48767 (Ref.2018). 10, 8 (1), 16-21.