Old Ethiopian (?) Book

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."

Since we were told it was Ethiopian and we are about to embark on our Ethiopia adventure, I thought I would scan the pages and post a few here. Perhaps through the miracle of the intertubes somebody may run across this who can read it and tell us what we've got.

Some sample pages (probably not in order and may not even be right side up):