Compare Publications for Letter (Astounding Science-Fiction, March 1939): Stars—Plums—Now Planets! But—Ganymede's a Moon and Mercury's a Planet, But Ganymede's Bigger!

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Title: Letter (Astounding Science-Fiction, March 1939): Stars—Plums—Now Planets! But—Ganymede's a Moon and Mercury's a Planet, But Ganymede's Bigger!
Author: Ralph C. Hamilton
Date: 1939-03-00
Type: ESSAY

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	Title	Date	Author/Editor	Publisher/Pub. Series	ISBN/Catalog ID	Price	Pages	Format	Type	Cover Artist	Verif
	Astounding Science-Fiction, March 1939	1939-03-00	ed. John W. Campbell, Jr.	Street & Smith Publications, Inc.		$0.20^?$: US dollar	164	pulp^?Magazine using the common pulp size: 6.5" by 9.5". For ISFDB purposes this may also be used as a designation for the quality of the paper. There are some untrimmed pulps that are as large as 8" by 11.75	mag	Graves Gladney