TY - Acta Geographica Sinica A1 - Qi Qingwen, Liu Yue T1 - THE THEORY AND APPROACHES OF GEOGRAPHIC—FEATURE ORIENTED GENERALIZATION IN GIS ENVIRONMENT Y1 - 1998-07-15 00:00:00.0 JF - Acta Geographica Sinica JO - Acta Geographica Sinica SP - 303 EP - 313 VL - 53 IS - 4 UR - {https://www.geog.com.cn/EN/10.11821/xb199804002} N1 - 10.11821/xb199804002 ER -