Columbia subject headings:
Crete (Greece)--Description and travel.
Greece--Description and travel.
Soviet Union--Description and travel.
Harvard subject headings:
Crete (Greece)--Description and travel.
Greece--Description and travel.
Russia--Description and travel.
Soviet Union--Description and travel.
Princeton subject headings:
Crete (Greece)--Description and travel.
Greece--Description and travel.
Soviet Union--Description and travel.