id	domain	url
ct-10162	www.ers.usda.gov	http://www.ers.usda.gov/publications/eib58/eib58.pdf
ct-10162	ageconsearch.umn.edu	http://ageconsearch.umn.edu/handle/9680/
ct-10162	usda.mannlib.cornell.edu	http://usda.mannlib.cornell.edu/mannusda/viewdocumentinfo.do?documentid=1259
ct-10162	www.nodpa.com	http://www.nodpa.com/january_2009_final_low-res.pdf