| October 31, 2012 | Edited by 142.154.119.69 | Editions of this book: 1984; 1988; 1995; 2000 |
| September 12, 2008 | Edited by RenameBot | fix author name |
| April 1, 2008 | Created by an anonymous user | initial import |
| October 31, 2012 | Edited by 142.154.119.69 | Editions of this book: 1984; 1988; 1995; 2000 |
| September 12, 2008 | Edited by RenameBot | fix author name |
| April 1, 2008 | Created by an anonymous user | initial import |