@book{3370,
	author = {Ravallion, Martin. and NetLibrary, Inc.},
	title = {Poverty lines in theory and practice},
	publisher = {World Bank,},
	year = {c1998.},
	series = {LSMS working paper ;},
	address = {Washington, DC :},
	url = {http://www.columbia.edu/cgi-bin/cul/resolve?clio4243119}
}