Columbia subject headings:
Boeckl, Herbert, 1894-1966.
Harvard subject headings:
Abtei Seckau (Seckau, Austria)
Apocalyptic art.
Boeckl, Herbert, 1894-1966. Apokalypse.
Mural painting and decoration--Austria--Seckau.
Princeton subject headings:
Abtei Seckau (Seckau, Austria)
Apocalyptic art.
Boeckl, Herbert, 1894-1966. Apokalypse.
Mural painting and decoration--Austria--Seckau.