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UBL Used Book Tracking Manager 0.11.1-signed.1-signed Requires Restart
UBL monitors Amazon for you when looking for used books that aren't currently available - the book might be completely unavailable or the price/condition just isn't right. We let you know via RSS - this extension makes it easy to add new requests.
This add-on has been marked as experimental by its developers
This add-on is not compatible with your version of Firefox because of the following: