Editions:

Print edition exists: Catalogue the *print* edition the pdf files represent,  *no* changes to describe the electronic resource.  (Leave 300$c in derived records, even though unknown  for originals.)

Born digital pubs. Catalogue the content, no reference to the  carrier.  Since it is being sold as an electronic reproduction  of an electronic document, the 856 url later inserted by script will be that of the customer as aggregator, not that of  the website of origin.

·                The 020 qualified as "(electronic bk.)" if not already; 

·                008/23 should be changed from "s" to blank.  

·                The 245$h[ ] should be removed.  

·                Move any 856 url to 530$aOnline version$u, and 

·                delete the 856 if present.