id	domain	url
esrj-74390	doi.org	https://doi.org/10.15446/esrj.v22n3.74390
esrj-74390	doi.org	https://doi.org/10.15446/esrj.v22n3.74390
esrj-74390	www.eia.gov	https://www.eia.gov/dnav/ng/ng_prod_
esrj-74390	www.mlr.gov.cn	http://www.mlr.gov.cn
esrj-74390	www.sinooilgas.com	http://www.sinooilgas.com
esrj-74390	www.gov.cn	http://www.gov.cn/gongbao/content/2013/content_2547157
esrj-74390	www.scwater.gov.cn	http://www.scwater.gov.cn/main/wqhg/ggl41/80279/index