iBooks

Not that I've seen.

 

At least it has page numbers .... kindle and nook do not. Actual page numbers would have too many variables. Ibooks in my opinion is the best reader app....and one of the reasons I still read on my pad and not my xoom.

Perhaps PDF text books couldn't map actual page numbers.

 

Kindle's most recent iPad update adds real page numbering:

"# Real page numbers for thousands of books in the Kindle Store, with more coming soon. Now you can make proper citations in the classroom or follow along with people reading print books in a book club.
# Home screen now shows your progress through books in list view.
# Look up words on Google and Wikipedia without leaving the app.
# Instant word lookup on included dictionary with 250,000 entries and definitions."

 

These two combinations make my head hurt...

But seriously there are usually so many versions of books with different page numbers. Paperback, hardcover, small, large. It gets even worse with the educational books referenced because those change ALL the time (and usually the actual content is 99% identical, just with everything moved around)