Where the meanings are

Revision	When	Who	Comment

9	September 16, 2021	ImportBot	import existing book
8	September 14, 2011	EdwardBot	merge lending editions
7	August 12, 2011	ImportBot	add ia_box_id to scanned books
6	December 15, 2010	ImportBot	Found a matching record from Better World Books .
5	August 19, 2010	IdentifierBot	added LibraryThing ID
4	April 16, 2010	bgimpertBot	Added goodreads ID.
3	April 13, 2010	Open Library Bot	Linked existing covers to the edition.
2	December 15, 2009	WorkBot	link works
1	November 7, 2008	ImportBot	Imported from Talis MARC record.