Santa Barbara: Ross-Erikson, Publishers, 1979. Paperback. xvii, 164p., preface, introduction, appendix; Trial of Arnold of Vernoille for Sodomy and Heresy, notes, bibliography, index, very good first edition trade paperback in pictorial wraps.
Please note, this book shares the exact same isbn (0874363004) with another completely unrelated book. Take care when ordering to be sure you are getting the title that you want.