Sears lista de encabezamientos de materia

Revision	When	Who	Comment

10	July 17, 2022	ImportBot	import existing book
9	December 20, 2020	MARC Bot	import existing book
8	February 11, 2019	MARC Bot	import existing book
7	August 19, 2010	IdentifierBot	added LibraryThing ID
6	April 16, 2010	bgimpertBot	Added goodreads ID.
5	September 4, 2009	ImportBot	Found a matching record from Better World Books .
4	May 12, 2009	ImportBot	Found a matching record from Better World Books .
3	May 7, 2009	ImportBot	Found a matching record from Better World Books .
2	April 26, 2009	ImportBot	Found a matching record from Better World Books .
1	November 15, 2008	ImportBot	Imported from Library of Congress MARC record.