MEDANI, SAMIR M. EL-, and NABILA M. EL- MALLAH. “?p-DIMETHYLAMINOBENZALDEHYDRAZONE DERIVATIVES AS INDICATORS”. Biological Sciences - PJSIR 38, no. 9-10 (October 23, 1995): 333–336. Accessed November 22, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/2514.