@book{490,
	author = {World Health Organization. Regional Office for South-East Asia.},
	title = {Community water supply and excerta disposal in South-East Asia.},
	publisher = {World Health Organization (WHO) Regional Office for South-East Asia,},
	year = {1977.},
	series = {(WHO Regional publications, South-East Asia series ; no. 4)},
	address = {New Delhi : }
}