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The following codes are the new book prefixes that will be used for the new collections added to BARD.
:DB - General collection digital talking books :DBF - Special foreign library collection digital talking books :DBM - Music collection (music appreciation and instruction) digital talking books :DBE - Gifts or special acquisitions (hypothetical)
:BR - General collection digital braille :BRM - Music collection digital braille :BRF - Special foreign library collection digital braille
There are currently forty-three network libraries that have locally produced books in the International Union Catalog. The book numbers are assigned by the cooperating libraries, and there is no standard convention used in the network.
Full MARC records for locally produced network books in BARD will be made available for network libraries. The original network library book numbers will be included in MARC records in a specially defined MARC field along with the CMLS code of the contributing library. This will allow contributing libraries to map the original numbers to the new NLS-assigned book numbers.
:DBN - Network digital talking books that have passed MSCE QA :DBC - All other network digital talking books. This could conceivably also be used for digital talking books from other external agencies. :BRC - Network (and, again, possibly other external agency) digital braille
In order to reliably identify magazine issues in download statistical reports, magazine issues will use the above prefixes. The rest of the magazine number will consist of the CMLS code and issue date, comprising the year, month, and, for weeklies, the day of the issue (e.g., DB NAT7_2011-06-06). New CMLS codes will be created for the locally produced magazines that appear in BARD.