Science Question Box: Three Classes of Meteors/Perpetual Motion/Radioactivity and Radium

From Author Wars - https://authorwars.com/books/science-question-box-three-classes-of-meteorsperpetual-motionradioactivity-and-radium-1832476.html

Overview:

Title: Science Question Box: Three Classes of Meteors/Perpetual Motion/Radioactivity and Radium
Author: uncredited
Year: 1939
Type: Essays
Series: Science Question Box

Editions/Publications:

Unknown. Startling Stories, September 1939 (Unknown, uncredited, Adventure House, ISBN-10: 9781597985086, $14.95, 130 pages, Trade Paperback, Anthology)

This text has been adapted from the Science Question Box: Three Classes of Meteors/Perpetual Motion/Radioactivity and Radium entry at the Internet Speculative Fiction Database and is available under a Creative Commons License. The ISFDB does not endorse or sponsor this use.