Sorry, we know that it sucks when you get excited about a book and it's not there. TUEBL tries hard to ensure that uploaded books have been put up by their copyright holders but sometimes books slip through the cracks.
If you own the copyright to the book, and it has been removed -- we take these issues very seriously. Please email email@example.com and tell us, we will re-approve your book and inform the other party. We will also seek a $150 fine against the body who removed the book, when paid we will issue you a $50 cheque for their negligence.