ISBN. The hyphens must be included. Input the check-digit "X" in upper case.
#100 7-80013-008-8
#100 962-04-0596-X
#100 978-7-80718-670-0
If there is more than one ISBN, indicate the volume to which each applies in subfield |v, using the terminology found in the volume, if possible.
#100 7-01-000018-2|v上
#100a7-01-000049-2|v下
If paperbound and hardbound editions have different ISBNs and they are both noted in the book, give them both and indicate the edition to which each applies in subfield |v.
#100 957-00-1083-5|v精裝
#100a957-00-1084-3|v平裝