Columbia subject headings:
Kant, Immanuel, 1724-1804--Friends and associates.
Kraus, Christian Jacob, 1753-1807.
Harvard subject headings:
Kant, Immanuel, 1724-1804--Friends and associates.
Kraus, Christian Jacob, 1753-1807.
Romanies--Research--History--18th century.
Princeton subject headings:
Kant, Immanuel, 1724-1804--Friends and associates.
Kraus, Christian Jacob, 1753-1807.