id	domain	url
ger-615	www.jstor.org	https://www.jstor.org/stable/1085567
ger-615	ftp.iza.org	https://ftp.iza.org/dp3515.pdf
ger-615	www.pedocs.de	http://www.pedocs.de/volltexte/2010/1575
ger-615	www.encyclopedia.com	https://www.encyclopedia.com/doc/1g22830904596.html
ger-615	play.google.com	https://play.google.com/books/reader?printsec
ger-615	archive.org	https://archive.org/details/practicalguideto00r
ger-615	www.acf.hhs.gov	https://www.acf.hhs.gov/sites/default/files/opr
ger-615	www.acf.hhs.gov	www.acf.hhs.gov
ger-615	drfiene.files.wordpress.com	https://drfiene.files.wordpress.com/2018/04/p