TY - JOUR SN - 1561-0594 AU - HSING I-tien TI - Using Satellite Images to Observe the Garrison Sites along the Southern Line of the Han “Outer Great Wall”, Inner Mongolia JO - Disquisitions on the Past & Present JA - Disquisitions on the Past & Present VL - 34 SP - 77 EP - 128 PY - 2020 Y1 - 2020/06/30 ER -