Was ist los auf Planet Zeno?

From Author Wars - https://authorwars.com/publications/was-ist-los-auf-planet-zeno-657809.html

Overview:

Title: Was ist los auf Planet Zeno?
Author: H. Beam Piper
Year: 1976
ISBN-10: 3275006274
Publisher: Müller Rüschlikon
Price: DM 14.80
Pages: 124
Binding: Hardcover
Type: Novel
Title Reference: Was ist los auf Planet Zeno?
Notes: Data from Deutsche Nationalbibliothek and Amazon.de. This could be taken as an entry in a Pub Series called Science Fiction Für Die Jugend, but the Heinleins in this format and with this blurb are already in the Pub Series Sirius SF.