10-ISBN 0-231-12340-X; 13-ISBN 978-0-231-12340-2; OCLC 46731178* Nussbaum, Louis-Frédéric and Käthe Roth.
10-ISBN 0-231-12340-X; 13-ISBN 978-0-231-12340-2; OCLC 46731178* Nussbaum, Louis-Frédéric and Käthe Roth.