Revision history of "The Right Way To Be Happy: Learn The Important Thing To Turning Out To Be Satisfied"
From In-Portal Developers Guide
(Latest | Earliest) View (newer 50) (older 50) (20 | 50 | 100 | 250 | 500)Diff selection: mark the radio boxes of the versions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with current version,
(last) = difference with preceding version, M = minor edit.