by Yale University Library
Workflow outlining standards for exact copies and acceptable variations in copy cataloging.
Available at : https://web.library.yale.edu/cataloging/workflow/added-copy-or-new-record-books
Archived with Internet Archive (2018-12-07): https://web.archive.org/web/20181207160652/https://web.library.yale.edu/cataloging/workflow/added-copy-or-new-record-books