@book
{TN_libero_mab2,
author = {
Siebert, Priscilla Ann
},
title = {
Das Bilderbuch vom Frosch
die Entwicklung d. Frosches in 14 Bildern
},
edition = {
1-20 Tsd.
}
,
publisher = {kinderbuchverl},
year = {1951},
address = {
Berlin
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}