Greetings code4lib gang, First time poster, five-month lurker. Try as I might, I cannot seem to find a dictionary for the values for "form" in the response for the OCLC xID services. For example, in the response to this request: http://xisbn.worldcat.org/webservices/xid/isbn/9781111528300?method=getEditions&format=json&fl=* What do these two values mean (BA and BC) and what other values for "form" can occur? "form":["BA"], "form":["BC"], Sincerely, Mark -- Mark H. Witteman | Technical Consultant | +1 225-578-0421 LOUIS: The Louisiana Library Network<http://www.louislibraries.org/>