This is the second set of interim revisions to this title since its release in 9400. It supplements the 9600 Interim Revisions. Available in standard (US) or metric (SI) units.
Books can be attributed to "Unknown" when the author or editor (as applicable) is not known and cannot be discovered. If at all possible, list at least one actual author or editor for a book instead of using "Unknown".
Books whose authorship is purposefully withheld should be attributed instead to Anonymous.