@book
{TN_libero_mab2,
author = {
Ten Bruggencate, Paul
Grotrian, Walter
AND
Kopff, August
},
title = {
Zur Erforschung des Weltalls
8 Vorträge über Probleme der Astronomie und Astrophysik
},
publisher = {Springer},
keywords = {
Astronomy
,
Astrophysics
,
Astronomie
,
Weltall
},
year = {1934},
address = {
Berlin
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}