Hey Mark, The values are listed on this page: http://xisbn.worldcat.org/xisbnadmin/doc/api.htm#response form: The ONIX production form code, this field is space-delimited if multiple values exist. Current supported values include: AA (Audio), BA (Book), BB (Hardcover), BC (Paperback), DA (Digital),FA (Film or transparency), MA(Microform), VA(Video). Sincerely, -Mike Waugh Systems Librarian LSU Libraries Louisiana State University Middleton Library, Room 5, Baton Rouge, LA 70803 Office 225-578-3330 [log in to unmask] | lsu.edu | lib.lsu.edu -----Original Message----- From: Code for Libraries [mailto:[log in to unmask]] On Behalf Of Mark Witteman Sent: Wednesday, May 04, 2016 2:23 PM To: [log in to unmask] Subject: [CODE4LIB] "Form" dictionary for xID Service - xisbn getEditions 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/>