This is a paperback book by Frank Gruber, Complete and Unabridged, and is a former library copy. The First Linford Edition was published, Dec. 1989 and published in the USA in 1971. It is a mystery about Dectective Logan who was the prime suspect in a killing; this book is a large print edition.
Used availability for Frank Gruber's The Etruscan Bull
February 1970 : UK Hardback
January 1989 : UK Paperback