@book{13493,
	author = {United Nations Environment Programme. and Ahmad, Yusuf J. and World Bank.},
	title = {Environmental accounting for sustainable development.},
	publisher = {The World Bank,},
	year = {1989.},
	series = {WORLD Bank symposium).},
	address = {Washington, D.C. : },
	note = {Selected papers from joint UNEP/World Bank workshops.}
}