| December 2, 2019 | Edited by Camillo Pellizzari | merge authors |
| March 31, 2017 | Edited by MARC Bot | add VIAF and wikidata ID |
| November 26, 2012 | Edited by Markus Bonnevier | Edited without comment. |
| November 26, 2012 | Edited by Markus Bonnevier | Edited without comment. |
| November 26, 2012 | Created by Markus Bonnevier | Added new book. |