Columbia subject headings:
Harvard subject headings:
Canada--Description and travel--Early works to 1800.
England--Description and travel--Early works to 1800.
Kalm, Pehr, 1716-1779--Travel.
Natural history--Canada
Natural history--England.
Natural history--Norway
Natural history--United States
Norway--Description and travel.
United States--Description and travel--Early works to 1800.
Princeton subject headings:
Canada--Description and travel--Early works to 1800.
England--Description and travel--Early works to 1800.
Kalm, Pehr, 1716-1779--Travel.
Natural history--Canada.
Natural history--England.
Natural history--Norway.
Natural history--United States.
Norway--Description and travel.
United States--Description and travel--Early works to 1800.