@book{3335,
	author = {Wilhite, Donald A.},
	title = {Drought assessment, management, and planning :},
	publisher = {Kluwer Academic Publishers,},
	year = {c1993.},
	address = {Boston :},
	url = {http://www.loc.gov/catdir/enhancements/fy0819/93022111-d.html}
}