 Johannes Keizer |
|
residence germany dresdener strasse 112 10179 Berlin, |
residence italy Buonrespiro 37 05018 Orvieto |
| website | https://www.johanneskeizer.com |
| researchgate | https://www.researchgate.net/profile/Johannes_Keizer |
| flickR | https://www.flickr.com/photos/johanneskeizer/ |
| YouTube | https://www.youtube.com/JohannesKeizer |
| skype | johannes.keizer |
| https://www.facebook.com/johannes.keizer | |
| https://www.linkedin.com/pub/dir/johannes/keizer | |
| slideshare | https://www.slideshare.net/Keizer/newsfeed |
| johannesk55 |