Der Zeitdamm — was ist das?

From Author Wars - https://authorwars.com/books/der-zeitdamm----was-ist-das-2001081.html

Overview:

Title: Der Zeitdamm — was ist das?
Author: Kurt Mahr
Year: 1983
Type: Essays
Series: Perry Rhodan Computer
Number in Series: 366

Variant Titles:

1983. Der Zeitdamm — was ist das?