Columbia subject headings:
Harvard subject headings:
Cold Regions Research and Engineering Laboratory (U.S.)
United States--Description and travel.
Zotikov, I. A. (Igorʹ Alekseevich)--Diaries.
Princeton subject headings:
United States--Description and travel.
Zotikov, I. A. (Igorʹ Alekseevich)--Travel--United States.