The Day After Tomorrow

From Author Wars - https://authorwars.com/publications/the-day-after-tomorrow-263304.html

Overview:

Title: The Day After Tomorrow
Author: Robert A. Heinlein
Year: Unknown
Publisher: Signet / New American Library
Price: $0.75
Pages: 144
Binding: Paperback
Type: Novel
Title Reference: The Day After Tomorrow
Notes:
• "Seventh Printing"
• No date or number line
• The artist is not credited, szafran is on the cover
• Printed in the US