New UDC Master Reference File (MRF12) Released

UDC MRF12 was released at the end of December 2018. It contains changes published in two double-issues of the Extensions & Corrections to the UDC: 34-35 and 36-37. The new UDC MRF now consists of around 72,000 classes and it brings changes to over 6,000 classes.

UDC MRF is distributed under licence. The standard set of distribution files consists of XML, text, and ISO (for CDS/ISIS) exports. MRF12 is the last UDC MRF version distributed with an ISO file.