The bf:Generation class is currently being used in our transformation in  MARC just for 007 byte 11, to denote the Generation for motion pictures, microforms. I don’t’ think of it as an event class or a link to another Instance.




Nate Trail

Network Development & MARC Standards Office


LA308, Mail Stop 4402

Library of Congress

Washington DC 20540





From: Bibliographic Framework Transition Initiative Forum <[log in to unmask]> On Behalf Of Sofia Zapounidou
Sent: Wednesday, September 18, 2019 6:55 AM
To: [log in to unmask]
Subject: [BIBFRAME] Use of the bf:Generation class


Dear all, 

I would like your help regarding the use of the bf:Generation class. 

This class seems to me like an event class that may be used to document the details of a reproduction process.

What I do not get is how one can connect the original bf:Instance to the reproduced one using the bf:Generation class. 

The use of an original bf:Instance in a reproduction process can be represented with the following path: bf:Instance-bf:generation-bf:Generation. 

Is there a property to relate the bf:Generation class instance to the reproduced bf:Instance? Due to domain and range restrictions the  bf:generation property cannot be used (Domain: Instance, range:Generation). 


Thanks in advance and greetings from Greece

Sofia Zapounidou


Απαλλαγμένο από ιούς.