SINGH, I. (2010) “Synthesis and Analytical Studies of a New Bis-azo Dye: 2,6-Bis(9-hydroxyphenanthryl-10-azo) pyridine ”, Asian Journal of Chemistry, 15(1), pp. 185–190. Available at: https://asianpubs.org/index.php/ajchem/article/view/21523 (Accessed: 23 July 2024).