1. Research on Environmental Quality Evaluation System of Coordinated Development of the Beijing-Tianjin-Hebei Region. Issue 1 (June 2020) Authors: Hao, C X; Ge, C Z; Qin, J L; Chen, Z W; Zhou, Q; Qu, A Y; Peng, C; Li, N; Dong, Z F; Hu, Rui Journal: IOP conference series Issue: Volume 513:Issue 1(2020) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗