No. Because there is more than one kind of permission barrier to remove, there is more than one kind or degree of libre OA. BBB OA is one kind or subset of libre OA. But there are others, and not all libre OA is BBB OA.
No. Because there is more than one kind of permission barrier to remove, there is more than one kind or degree of libre OA. BBB OA is one kind or subset of libre OA. But there are others, and not all libre OA is BBB OA.