Robert Klein
Author 1
| Title | Number | Date | Format | |
|---|---|---|---|---|
 | Drei Neffen drehen durch | Vol. 1 | 2016-08 | Trade Paperback |
Co-Author 2
| Title | Number | Date | Format | |
|---|---|---|---|---|
 | Geld im Anflug | Vol. 27 | 2015-11-03 | Softcover |
 | Die Ferien-Falle | Vol. 38 | 2017-09-12 | Softcover |
| Title | Number | Date | Format | |
|---|---|---|---|---|
| Drei Neffen drehen durch | Vol. 1 | 2016-08 | Trade Paperback |
| Title | Number | Date | Format | |
|---|---|---|---|---|
| Geld im Anflug | Vol. 27 | 2015-11-03 | Softcover |
| Die Ferien-Falle | Vol. 38 | 2017-09-12 | Softcover |