Das absolut vollkommene Juwel

From Author Wars - https://authorwars.com/books/das-absolut-vollkommene-juwel-1368102.html

Overview:

Title: Das absolut vollkommene Juwel
Author: R. A. Lafferty
Year: 1973
Type: Short Fiction

Editions/Publications:

Unknown. Damon Knight's Collection 9 (Unknown, R. A. Lafferty, Fischer Taschenbuch, ISBN-10: 3436016489, DM 2.80, 124 pages, Paperback, Anthology)