并列题名：Study on the food supply geography in northwest war area of Northern Song dynasty Study on the food supply geography in northwest war area of Northern Song dynasty Study on the post system in southwest China of the Ming dynasty 并列题名：Study on the fiscal thought in the late period of Qing dynasty 并列题名：Study on the statues chirography of the Northern dynasty 并列题名：Study on poetry in the early southern Song dynasty 并列题名：Study on the scholars and regional public welfare in southern Song dynasty 并列题名：Study on the social security culture of the Song dynasty 并列题名：Study on the modernity of travels in the Late Qing dynasty 并列题名：Study on fu gu bian by Zhang You in Northern Song dynasty