Rocket Ship Galileo

From Author Wars - https://authorwars.com/publications/rocket-ship-galileo-90061.html

Overview:

Title: Rocket Ship Galileo
Author: Robert A. Heinlein
Year: 1981
ISBN-10: 0345302761
Publisher: Del Rey / Ballantine
Price: $1.95
Pages: 187
Binding: Paperback
Type: Novel
Title Reference: Rocket Ship Galileo
Notes:
Still states first edition, at least the fourth printing but no number line Date seems to be from amazon.com so is suspect OCLC lumps this printing's ISBN in with the record for the 1977 true first Ballantine edition