Verschwindet das Magnetfeld der Erde?

From Author Wars - https://authorwars.com/books/verschwindet-das-magnetfeld-der-erde-2430511.html

Overview:

Title: Verschwindet das Magnetfeld der Erde?
Author: Peter Griese
Year: 1979
Type: Essays

Editions/Publications:

1979 . Orion, #91: Zeitreisende wider Willen (1979, Peter Griese, Pabel-Moewig, DM 1.60, 68 pages, digest, MAGAZINE)