id	domain	url
crl-24257	doi.org	https://doi.org/10.18665/sr.277685
crl-24257	www.mext.go.jp	www.mext.go.jp/b_menu/toukei/002/002b/1383990.htm
crl-24257	www.ala.org	www.ala.org/acrl/standards/ilframework