Most of the information in the book is available elsewhere. There are many, many resources available to us that contain most of the things many people here are commonly looking for, its just a matter of getting out there and finding it. Check not only the internet, but your local library and if available to you, a nearby university library.
Here is an immense resource of fairly detailed information on a few hundred different varieties. Also check out the other publications and resources Bioversity International has to offer.
Banana Bioversity International -- - Catalogues of Musa Germplasm