This work contains the following individual pieces:
Array ( [_edit_lock] => Array ( [0] => 1576612744:1 ) [ASIN] => Array ( [0] => 1598531042 ) [_edit_last] => Array ( [0] => 1 ) [ISBN] => Array ( [0] => 9781598531046 ) )
Array ( [_edit_lock] => Array ( [0] => 1576612744:1 ) [ASIN] => Array ( [0] => 1598531042 ) [_edit_last] => Array ( [0] => 1 ) [ISBN] => Array ( [0] => 9781598531046 ) )