The 13th Immortal

Overview:

• Title: The 13th Immortal
• Author: Robert Silverberg
• Year: 1957
• Type: Novel

Editions/Publications:

• 1957. The 13th Immortal / This Fortress World (1957, Robert Silverberg, James E. Gunn Ace Double, Catalog ID: #D-223, $0.35, 129+190 pages, Paperback, Novel)
• 2004. The 13th Immortal (October 2004, Robert Silverberg Cosmos, ISBN-10: 1930997760, $15.00, 145 pages, Trade, Novel)

Resources: