Open AccessClean Air Actions and Air Quality Improvements — Beijing-Tianjin-Hebei and Surrounding Areas, China, 2013−2019
Author(s) -
Shijie Liu,
Yangxi Chu,
Jingnan Hu
Publication year - 2020
Publication title -
china cdc weekly
Language(s) - English
Resource type - Journals
eISSN - 2097-3101
pISSN - 2096-7071
DOI - 10.46234/ccdcw2020.107
Subject(s) - beijing , china , air quality index , environmental science , quality (philosophy) , meteorology , geography , archaeology , philosophy , epistemology