@book{8401,
	author = {Whitacre Paula Tarnapol, and National Research Council (U.S.).},
	title = {Toward sustainable agricultural systems in the 21st century.},
	publisher = {National Academies Press,},
	year = {[2010]},
	address = {Washington, D.C. :},
	url = {http://www.nap.edu/catalog.php?record_id=12832}
}