Columbia subject headings:
Juel, Just, 1664-1715.
Peter I, Emperor of Russia, 1672-1725.
Russia--Description and travel.
Harvard subject headings:
Denmark--Foreign relations--1660-1814.
Denmark--Foreign relations--Soviet Union.
Russia--Foreign relations--1689-1725.
Soviet Union--Foreign relations--Denmark.
Princeton subject headings:
Juel, Just, 1664-1715.
Peter I, Emperor of Russia, 1672-1725.
Russia--Description and travel.