This seems to be a Spanish series of Terry Pratchett stuff. It includes both Discworld and Bromeliad and a couple of anthologies and what looks to be a book of Tolkien criticism.

ISTR that this was cleaned off of the English librarything in the past. Although it is easy to just go ahead and clean it off again, is there anything we can do to prevent someone adding it in again?

I've put a description on the series, hopefully whoever is adding them will notice. But someone else will probably do it again, and then we'll just have to delete them again.