Relationships
| official homepages: | http://www.martinkrengel.com/ [info] |
|---|---|
| other databases: | https://d-nb.info/gnd/132394103 [info] |
| social networking: | https://twitter.com/martinkrengel [info] https://www.facebook.com/bestleistung [info] https://www.xing.com/profile/Martin_Krengel [info] |
| YouTube channels: | https://www.youtube.com/user/AutorMartinKrengel [info] |
| VIAF ID: | 52848426 [info] |
Appearances
| Date | Title |
|---|---|
| wrote | |
| Golden Rules: Erfolgreich lernen und arbeiten |