@book{21564,
	author = {Mcneill, John R and McNeill, John Robert.},
	title = {Environmental history :},
	publisher = {Oxford University Press,},
	year = {2010.},
	series = {Ecological economics and human well-being},
	address = {New Delhi :},
	url = {http://www.loc.gov/catdir/enhancements/fy1009/2010316942-t.html}
}