@book{4044,
	author = {Punmia, B. C. and Jain, Ashok Kumar},
	title = {Wastewater engineering :},
	publisher = {Laxmi Publication,},
	year = {2018.},
	address = {Bengaluru:},
	url = {https://books.google.com.pk/books/about/Waste_Water_Engineering.html?id=VmsvcHoq2cgC&redir_esc=y}
}