The Tuvela (Part 1 of 2)

From Author Wars - https://authorwars.com/books/the-tuvela-part-1-of-2-193170.html

Overview:

Title: The Tuvela (Part 1 of 2)
Author: James Schmitz
Year: 1968
Type: Serials

Editions/Publications:

Unknown. Analog Science Fiction -> Science Fact, September 1968 (Unknown, James Schmitz, Condé Nast, $0.60, 180 pages, digest, MAGAZINE)