来源 :Chinese Journal of Population,Resources and Environment | 被引量 : [!--cite_num--]次 | 上传用户:[!--user--]
【摘 要】
:
Chengde City,famous for its cultural sightseeing tourism industry,and is located in China’s“Capital Holiday Tourism Circle”.This location is advantageous,bec
【出 处】
:
Chinese Journal of Population,Resources and Environment