@book{20157,
	author = {GARG,S.K.},
	title = {ENVIRONMENTAL ENGINEERING VOL II : SEWAGE DISPOSAL AND AIR POLLUTION ENGINEERING},
	publisher = {KHANNA },
	year = {1979 R.P. 2020},
	edition = {40THED},
	note = {RBPPL80774/20-21}
}