PBS XML Schema Version 3.1.9
Pattern db.biblio.class.enumeration
Defined in PBS XML Schema grammar.
This pattern may contain:
One of the following:
doi
A digital object identifier.
isbn
An international standard book number.
isrn
An international standard technical report number (ISO 10444).
issn
An international standard serial number.
istc
An international standard text code.
libraryofcongress
A Library of Congress reference number.
pubsnumber
A publication number (an internal number or possibly organizational standard).
uri
A Uniform Resource Identifier