TY - Acta Geographica Sinica A1 - WANG Shangyi T1 - The Relationship of the Yellow River Flood and the Land Use in the Middle Reaches during the Han Dynasties Y1 - 2003-01-25 00:00:00.0 JF - Acta Geographica Sinica JO - Acta Geographica Sinica SP - 73 EP - 82 VL - 58 IS - 1 UR - {https://www.geog.com.cn/EN/10.11821/xb200301009} N1 - 10.11821/xb200301009 ER -