@book
{TN_libero_mab2,
author = {
Graff, Heinz
},
title = {
Instalaciones eléctricas
},
edition = {
2. ed.
}
,
publisher = {},
year = {1966},
booktitle = {Principios tecnicos},
address = {
Leipzig
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}