Columbia subject headings:
Kummer, Carl Robert--Catalogues raisonnés.
Landscape painting, German--19th century--Catalogs.
Harvard subject headings:
Kummer, Carl Robert--Catalogues raisonnés.
Landscape painting, German--19th century--Catalogs.
Princeton subject headings:
Catalogs.
Kummer, Carl Robert, 1810-1889--Criticism and interpretation.
Landscape painting, German--19th century--Catalogs.