Schon wieder das Hexameron?

From Author Wars - https://authorwars.com/books/schon-wieder-das-hexameron-2497386.html

Overview:

Title: Schon wieder das Hexameron?
Author: Kurt Mahr
Year: 1990
Type: Essays
Series: Perry Rhodan Computer
Number in Series: 634

Variant Titles:

1990. Schon wieder das Hexameron?