Columbia subject headings:
Harvard subject headings:
Europe--Description and travel.
Zheng, Zhenduo, 1898-1958--Diaries.
Zheng, Zhenduo, 1898-1958--Journeys--Europe.
Princeton subject headings:
Europe--Description and travel.
Zheng, Zhenduo, 1898-1958--Diaries.
Zheng, Zhenduo, 1898-1958--Journeys--Europe.