Characteristics, Causes and Potential Source Regions of PM25 Pollution in Winter in Shijiazhuang, China
CHEN Fei, ZHANG Xiao-hua, YU Hong-xia, ZHANG Hui, GAO Ji-xi
Journal of Ecology and Rural Environment . 2017, (11): 975 -982 .  DOI: 10.11934/j.issn.1673-4831.2017.11.003