Michael Laumanns of Spelo club Berlin, sells books that cover most of the caving regions of the world including lots of stuff in Africa
http://www.speleo-berlin.de/gb_publikationen.php?PHPSESSID=06450bebe0b914336443abe918ed22fd
The volumes 28 to 30 claim to cover all the caving areas of Africa with many descriptions and Surveys.
These are very good publications that are well researched and produced and the whole series deserves to be part of every club library.
Michael is normally at Hidden Earth and usually does a "deal" to clubs for a series of these books.
If your club doesn't have these then I know that Wessex has the earlier ones, but not the 2008 releases (yet).
I might be persuaded to have a look over the Christmas break if required.