@book{174,
	author = {Gardner, Gary T., and Worldwatch Institute.},
	title = {State of the world, 1991 :},
	publisher = {W.W. Norton & Co.,},
	year = {c1991.},
	address = {New York ;},
	edition = {First edition},
	note = {"Special 20th anniversary edition"--Dust jacket.}
}