Four-Day Planet
From Author Wars - https://authorwars.com/publications/four-day-planet-14510.html
Overview:
- Title: Four-Day Planet
- Author: H. Beam Piper
- Year: 1961
- Publisher: G. P. Putnam's Sons
- Price: $3.50
- Pages: 221
- Binding: Hardcover
- Type: Novel
- Title Reference: Four-Day Planet
- Notes: No statement of printing. Artist credited on front jacket flap.