This is the book we acquired in an Ouagadougou antiquities shop during our 2007 West Africa trip. As I said at the time, we really don't have any idea what we acquired:
"... lost among the carved wooden doors, masks, fetishes, and beaded jewelry, on a shelf in a glass case, I spot a short stack of dusty old manuscripts. We purchase the smallest book - hand written text on yellowing parchment, bound between covers of wood. No idea of age or origin, but are told it is Ethiopian. An ancient traveler's prayer book? Maybe. A desert trader's ledger? Could be. A forgery to scam tourists? All are possibilities."
Some sample pages (probably not in order and may not even be right side up):