TY - Acta Geographica Sinica A1 - Wei Chaoyang, Zhang Licheng, He Shujin, Zhao Guijiu T1 - A DISCUSSION ON THE ECO-ENVIRONMENTAL CONDITIONS IN THE COAL MINING AREAS IN CHINA Y1 - 1997-07-15 00:00:00.0 JF - Acta Geographica Sinica JO - Acta Geographica Sinica SP - 300 EP - 307 VL - 52 IS - 4 UR - {https://www.geog.com.cn/EN/10.11821/xb199704002} N1 - 10.11821/xb199704002 ER -