“Study of Biological Oxygen Demand and Chemical Oxygen Demand of Waste Water of Gajraula, District Amroha, UP ”. Bulletin of Pure and Applied Sciences-Chemistry 41, no. 1 (June 12, 2022): 49–51. Accessed July 22, 2024. https://acspublisher.com/journals/index.php/bpaschem/article/view/8385.