@book
{TN_libero_mab2,
author = {
Ortlieb, Rudolf
},
title = {
Die Sperber
},
publisher = {Ziemsen Verl.},
keywords = {
Sperber
},
year = {1979},
booktitle = {Die neue Brehm-Bücherei ; 523},
address = {
Wittenberg Lutherstadt
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}