Lucifer's Hammer

From Author Wars - https://authorwars.com/publications/lucifers-hammer-287257.html

Overview:

Title: Lucifer's Hammer
Author: Larry Niven, Jerry Pournelle
Year: 1978
ISBN-10: 0449235998
Publisher: Fawcett Crest
Price: $2.50
Pages: 640
Binding: Paperback
Type: Novel
Title Reference: Lucifer's Hammer
Notes: First printing.
Info from Locus #215 (October 1978).
1985 edition states "First Fawcett Crest Edition: July 1978"