Islam, M. Saidul, CM Zakaria, M Y Reza, and Tohura Khatun. 1999. “?STUDIES ON THE MIXED LIGAND COMPLEXES OF Cr (III) AND Co (III) CONTAINING MONOBASIC ACIDS ANDTETRAAZA MACROCYCLES”. Biological Sciences - PJSIR 42 (2):70-73. https://v2.pjsir.org/index.php/biological-sciences/article/view/2114.