著者について
John Walkenbach is a leading authority on spreadsheet software, and principal of J-Walk and Associates Inc., an Arizona–based consulting firm that specializes in spreadsheet application development. John is the author of about 40 spreadsheet books, and has written more than 300 articles and reviews for a variety of publications, including PC World, InfoWorld, PC Magazine, Windows, and PC/Computing. He also maintains a popular Internet Web site (The Spreadsheet Page, www.j-walk.com/ss), and is the developer of the Power Utility Pak, an award-winning add-in for Microsoft Excel. John graduated from the University of Missouri, and earned a Masters and PhD from the University of Montana.