The Investment Portfolio User's Manual Intellipro, Inc., Christopher Blake, Edwin J. Elton, Martin J. Gruber, Georgio DeSantis, Joseph Finnerty, William N. Goetzmann, Ehud Ronn ISBN: 978-0-471-24610-7 Paperback 216 pages This product is not currently available for purchase from this website. For customer care, special sales, or to find your rep, please visit our Contact Us page.