Dufour's books on learning communities are available on Kindle. I have a Kindle and a Nook and like the Nook better. I am an educator and would like to keep up with trends in education on my Nook, but I can't find these types of books on the Nook. I only find them on Kindle. Please get some of the DuFour books on the Nook. I have not seen any of Robert Marzano's books available in digital format. I would also like to see his books on Nook.
You're correct, I searched through Inkmesh and Marzano's books are only available digitally in PDF or AZW.
If you haven't already done so, you need to post this on the thread on this board entitled something like, "Can't find your eBook? Tell us here." B&N staff monitor that thread and forward requests like yours to the publishers.