Publishing group for partner presses

Capture the product and publishing group values for the partner presses in the bookMeta/metaDescribes element.

/book/bookMeta/metaItem[@about='book']/metaDescribes

Example for publisher Fordham


      <book id="upso-9780823233946" OSOsubject="philosophy" doi="10.5422/fso/9780823233946.001.0001">
        <bookMeta id="upso-9780823233946-bookMeta-1"><metaItem about="book">
 <!-- DTD and TCI information skipped for brevity -->
 <metaDescribes predicate="product">UPSO</metaDescribes>
 <metaDescribes predicate="publishing-group">Fordham UPSO</metaDescribes></metaItem>
        </bookMeta>
      </book>