Franck, Norbert
[Author];
Aich, Gernot
[Author];
Behr, Michael
[Author];
Kempfert, Guy
[Author];
Ludwig, Marianne
[Author];
Bastian, Johannes
[Author];
Combe, Arno
[Author];
Langer, Roman
[Author];
Miller, Reinhold
[Author]
;
Julius Beltz GmbH & Co. KG