@book{19129,
	author = {United Nations.},
	title = {Lignite resources of Asia and the Far East, their exploration, exploitation and utilization.},
	publisher = {United Nations Dept. of Economic and Social Affairs},
	year = {[1956]},
	series = {Its Mineral resources development series,},
	address = {[New York?]},
	note = {United Nations. [Document] E/CN.11/438.}
}