id	domain	url
ajbmeb-1551	www.americanjournal.org	www.americanjournal.org
ajbmeb-1551	www.americanjournal.org	www.americanjournal.org
ajbmeb-1551	www.americanjournal.org	www.americanjournal.org
ajbmeb-1551	www.americanjournal.org	www.americanjournal.org
ajbmeb-1551	www.americanjournal.org	www.americanjournal.org
ajbmeb-1551	www.americanjournal.org	www.americanjournal.org
ajbmeb-1551	www.americanjournal.org	www.americanjournal.org
ajbmeb-1551	www.census.gov	http://www.census.gov/content/dam/census/library/working-papers/2001/econ/digitalecon.pdf