@book{497,
	author = {Buck, Louise.},
	title = {Agroforestry in sustainable agricultural systems /},
	publisher = {CRC Press,},
	year = {c1999.},
	address = {Boca Raton, Fl. :},
	url = {http://www.loc.gov/catdir/enhancements/fy0646/98031470-d.html}
}