The Twelve Riddles of the Universe (Part 11 of 12)

From Author Wars - https://authorwars.com/books/the-twelve-riddles-of-the-universe-part-11-of-12-3362855.html

Overview:

Title: The Twelve Riddles of the Universe (Part 11 of 12)
Author: uncredited
Year: 1941
Type: Serials

Editions/Publications:

1941 . The Rover, August 23, 1941 (1941, uncredited, D. C. Thomson, -/2, 16 pages, Pamphlet, MAGAZINE)