TY - PROGRESS IN GEOGRAPHY A1 - T1 - Y1 - 2006-11-25 00:00:00.0 JF - PROGRESS IN GEOGRAPHY JO - PROGRESS IN GEOGRAPHY SP - 149 EP - 149 VL - 25 IS - 6 UR - {https://www.progressingeography.com/EN/10.11820/dlkxjz.2006.06.018} N1 - 10.11820/dlkxjz.2006.06.018 ER -