====== 039 Other Identifier ======
\\
^Mandatory ^Repeatable ^Editable |
|no|yes|yes|

===== Scope =====

This field contains identifiers from external systems other than the ISTC

===== Indicators =====
  * Indicator 1: **#** undefined (blank)
  * Indicator 2: **#** undefined (blank)

===== Subfields =====
  * **$a** (O;NR) Identifier
  * **$9** (O;NR) Source



===== Input Conventions =====
Currently identifiers from the following external systems can be entered:

^Code ^System ^Displayed as |
|debsb|Bavarian State Library, Incunable Catalogue|BSB-Ink|
|degw|Gesamtkatalog der Wiegendrucke|GW|
|itigi|Indice Generale degli Incunaboli|IGI|
|itsbn|Catalogo del servizio bibliotecario nazionale|SBN(A)|
|ukhpb|CERL Heritage of the Printed Book Database|HPB|