The Bull and the Spear

From Author Wars - https://authorwars.com/publications/the-bull-and-the-spear-122401.html

Overview:

Title: The Bull and the Spear
Author: Michael Moorcock
Year: 1979
ISBN-10: 0583129846
Publisher: Mayflower
Price: £0.85
Pages: 150
Binding: Paperback
Type: Novel
Title Reference: The Bull and the Spear
Notes: Other Cover Prices: Republic of Ireland: 93.5p; Australia: $2.95; New Zealand: $2.75
"The Fourth Book of Corum". Note that the Mayflower series doesn't split the Corum books into two trilogies.
Price obscured.