@book
{TN_libero_mab2,
author = {
Schönbeck, Jürgen
},
title = {
Plus
mathematisches Unterrichtswerk; ... Schuljahr
},
publisher = {Schöningh},
keywords = {
Schulbuch
},
year = {19XX-},
address = {
Paderborn
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}