id	domain	url
iassist-618	dx.doi.org	http://dx.doi.org/10.6084/m9.figshare.824317
iassist-618	www.icpsr.umich	http://www.icpsr.umich
iassist-618	dx.doi.org	http://dx.doi.org/10.6084/m9.figshare.824317
iassist-618	www.icpsr.umich.edu	http://www.icpsr.umich.edu/cpes/index.html
iassist-618	www.icpsr.umich.edu	http://www.icpsr.umich.edu/cpes/index.html