They followed the DMCA takedown notice. They are not supposed to know who is or isn't authorized to distribute a version of a document. Even if they are identical, some, but not all links may be infringing.
You can signal several infringing links per request, I don't know why the OP didn't do so.
I checked all the PDFs present in the "all 95 versions", five of them lead to a copy of the book, the others are either 404 or slides for courses that use the book as reference material.
You can signal several infringing links per request, I don't know why the OP didn't do so.
I checked all the PDFs present in the "all 95 versions", five of them lead to a copy of the book, the others are either 404 or slides for courses that use the book as reference material.