TY - GEN AU - Song,Yan AU - Li,Zhenran AU - Yang,Tingting AU - Xia,Qing TI - Does the expansion of the joint prevention and control area improve the air quality?-Evidence from China's Jing-Jin-Ji region and surrounding areas SN - 1879-1026 PY - 2020///0114 N1 - Publication Type: Journal Article UR - https://doi.org/10.1016/j.scitotenv.2019.136034 ER -