AdobeDE on Bebook
Thanks Wallcraft - it looks like the only way to go to a specific chapter is by page-by-page advance.
I have Adobe Digital Editions on my PC and opened the Haggard omnibus. ADE acts the same as my Bebook - on ADE there is a 'Catalog' on the right side of the screen next to the ebook page - this showed the 3 volumes in the ebook. When I chose a specific volume using the catalog, it opened but there was no catalog accompanying the text. With ADE there seemed to be no way to go to a specific chapter in the volume, so it is no easier to read an omnibus with ADE on a PC than with my Bebook.