Rork!

From Author Wars - https://authorwars.com/publications/rork-255408.html

Overview:

Title: Rork!
Author: Avram Davidson
Year: 1977
Publisher: Manor Books
Price: $1.50
Pages: 144
Binding: Paperback
Type: Novel
Title Reference: Rork!
Notes:
"A Manor Book.......1977" Printing not stated, no number line ISBN is as printed on spine The artist is not credited, no visible signature; credit from http://www.munchkinpress.com. Printed in the US