id	domain	url
crln-22465	www.webdirectory.com	http://www.webdirectory.com/science/agriculture
crln-22465	www.yahoo.com	http://www.yahoo.com/science
crln-22465	www.envirolink.org	http://www.envirolink.org/pubs
crln-22465	pilot.msu.edu	http://pilot.msu.edu/user