Hello!
The MODS schema is very permissive and validates idioms such as (I removed
the greater-than and less-than characters to avoid possible
misinterpretations by some mail-software)
identifier type="isbn" 123-456-789-101-2
identifier type="isbn 13" urn:isbn:123-456-789-101-2
identifier type="isbn10" 123456789X
identifier type="ISBN_13" URN:ISBN:123-456-789-101-2
identifier type="isbn-10" 1-2-3-4-5-6-7-8-9-x
and much more. The MODS guidelines at
http://www.loc.gov/standards/mods/v3/mods-userguide-elements.html#identifier
state that:
> There is no controlled list of identifier
> types. Suggested values include [...] isbn
This does not specify anything about the different ways to write an ISBN (10
vs. 13, etc.) and I wonder whether the value of the @type attribute is
subject to any "common practice" to improve the consistency and portability
issues created by the permissiveness of the MODS xsd schema.
Regards!
SaaĊĦha,
|
