Want to permanently delete books in iCloud/iBooks

Hello everyone,

I'm looking for a way to permanently delete books that were transferred to iCloud and that I have now twice in my iBooks library and while I have the option to delete the "downloads" in my Mac, I can't delete the books from iCloud.

I really do love iCloud for music and all, but for iBooks I really find it a pain in the arse as all my books were uploaded to it so the "fix" to hide iCloud purchases is no longer usable. If someone knows what I could do that would really help, or if Apple FINALLY gave us access to our iClouds files that would be awesome. I know we can access all the documents we have on Pages or Notes from icloud.com for example, but nothing regarding our music or books, and this is something Apple should really give us access to one way or an other in my opinion!