@book{29937,
	author = {Webster, C. C. and Wilson, P. N.},
	title = {Agriculture in the tropics /},
	publisher = {Longman,},
	year = {c1980},
	series = {Tropical agriculture series},
	address = {New York :},
	edition = {2nd ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0802/79040086-d.html}
}