Threshold
From Author Wars - https://authorwars.com/publications/threshold-380575.html
Overview:
- Title: Threshold
- Author: Eric Flint, Ryk E. Spoor
- Year: 2012
- ISBN-10: 9781451637779
- Publisher: Baen Books
- Price: $7.99
- Pages: 456
- Binding: Paperback
- Type: Novel
- Title Reference: Threshold
- Notes: "First Baen paperback printing, June 2012"
No number line used
Cover artist credited on copyright page