Dark Piper

From Author Wars - https://authorwars.com/publications/dark-piper-8909.html

Overview:

Title: Dark Piper
Author: Andre Norton
Year: 1971
Publisher: Ace Books
Price: $0.60
Pages: 220
Binding: Paperback
Type: Novel
Title Reference: Dark Piper
Notes:
- The printing date is not stated. However, the advertising on the back pages are dated 8A-2-71, 25-6-71, and 6-71 and so a date of 1971-06-00 was used for this ISFDB record.
- Note that Ace printed another edition of this publication that's nearly identical to this one. The only difference is in the advertising which is undated but seems to be from mid to late 1969. See DRKPPRVHHX1969.