The Day of Their Return

From Author Wars - https://authorwars.com/publications/the-day-of-their-return-281822.html

Overview:

Title: The Day of Their Return
Author: Poul Anderson
Year: 1986
Publisher: Nelson Doubleday / SFBC
Pages: 182
Binding: Hardcover
Type: Novel
Title Reference: The Day of Their Return
Notes:
• New SFBC #, same artwork • At least the fourth printing • Gutter code "Q40" on page 181 indicates an October '86 printing. • Jacket painting credited to Corben on inside rear flap • Bound in blue boards with red lettering • Internally the typeface has been reset from the first printing