Columbia subject headings:
Harvard subject headings:
Chinese language--Middle Chinese, 1200-1919--Phonology--Congresses.
Zhou, Deqing, active 1314-1324. Zhong yuan yin yun--Congresses.
Princeton subject headings:
Chinese language--Phonology--Congresses.
Zhou, Deqing, active 1314-1324. Zhong yuan yin yun--Congresses.