Columbia subject headings:
Harvard subject headings:
Authors, German--Germany (East)--Journeys--Soviet Union.
Authors, German--Germany (East)--Travel--Soviet Union.
Authors, German--Travel--Germany (East)--Soviet Union.
Authors, Russian--Journeys--Germany (East)
Authors, Russian--Travel--Germany (East)
Princeton subject headings:
Authors, German--Germany (East)--Travel--Soviet Union.
Authors, Russian--Travel--Germany (East).