COLLECTED BY
Organization: National Library of Spain Crawls
Data collected by Internet Archive on behalf of the National Library of Spain. This data is currently not publicly accessible.
Collection: nls_2013
This crawl of the .es domain was performed in 2013 on behalf of the National Library of Spain (BNE).
TIMESTAMPS
The Wayback Machine - https://web.archive.org/web/20130614204403/http://alarcos.inf-cr.uclm.es/doc/ISOFTWAREI/Tema03.pdf