@book
{TN_libero_mab2,
author = {
Ratzel, Friedrich
Bobek, Hans
},
title = {
Deutschland
Einführung in die Heimatkunde
},
edition = {
7. Aufl.
}
,
publisher = {de Gruyter},
year = {1943},
address = {
Berlin [u.a.]
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}