Dear Ursula.
You can find a very great book about Nubia ( north Sudan) writed in french:
La Nubie des Pyramids
Joy Soulè Nan
Editions du Rocher
This woman is famous in France for her studies about this country. I went in North Sudan with her on febraury 2003,wen I was guide in that country.
If you can read italian language I can send you my last work about Sudan, " Nubia Tracks", not yet published.
Bye and good trip.

RoboGabr'Aoun