L'orologio temporale

From Author Wars - https://authorwars.com/books/lorologio-temporale-1613520.html

Overview:

Title: L'orologio temporale
Author: A. E. van Vogt
Year: 1976
Type: Short Fiction

Editions/Publications:

Unknown. Il cristallo venuto dal tempo (Unknown, A. E. van Vogt, Fanucci Editore, Lit 4,000, 276 pages, Trade Paperback, Collection)