Charmi Patel, Kaushalendra Singh, and Archana Pande. “AN ECONOMIC ANALYSIS OF SEPTIC TANK EMPTYING SERVICES BY HONEY SUCKERS IN LUCKNOW, INDIA”. International Journal of Technical Innovation in Modern Engineering & Science, vol. 5, no. 13, Feb. 2019, p. -, https://ijtimes.com/index.php/ijtimes/article/view/2995.