Letter (Astounding, April 1941): So They've Already Developed a Meteor Detector!

From Author Wars - https://authorwars.com/books/letter-astounding-april-1941-so-theyve-already-developed-a-meteor-detector-2092948.html

Overview:

Title: Letter (Astounding, April 1941): So They've Already Developed a Meteor Detector!
Author: Arthur McCann
Year: 1941
Type: Essays

Editions/Publications:

Unknown. Astounding Science-Fiction, April 1941 (Unknown, Arthur McCann, Street & Smith Publications, Inc., $0.20, 164 pages, pulp, MAGAZINE)

This text has been adapted from the Letter (Astounding, April 1941): So They've Already Developed a Meteor Detector! entry at the Internet Speculative Fiction Database and is available under a Creative Commons License. The ISFDB does not endorse or sponsor this use.