Json1 kimyungsa paperback amazon:8934962585 Proof of Heaven /type/textSource title: Proof of Heaven (Korean Edition) 252 10093452 /type/datetime2020-05-29T02:18:18.651511 9788934962588 Proof of Heaven 8934962585 May 29, 2013 /books/OL28153211M /type/datetime2020-05-29T02:18:18.651511 1 /type/edition 1