@misc
{TN_libero_mab2,
author = {
Börsch-Supan, Helmut
},
title = {
Caspar David Friedrich
},
publisher = {},
isbn = {3406333060},
isbn = {3422060200},
keywords = {
Friedrich, Caspar David
},
year = {1988},
abstract = {Literaturangaben},
address = {
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}