Columbia subject headings:
Harvard subject headings:
Euler, Leonhard, 1707-1783--Fiction.
Frederick II, King of Prussia, 1712-1786--Fiction.
Germany--History--18th century--Fiction.
Princeton subject headings:
Euler, Leonhard, 1707-1783--Fiction.
Fiction.
Frederick II, King of Prussia, 1712-1786--Fiction.
Germany--History--18th century--Fiction.
Novels.