What has the author Hans von Bertele written?

There is no widely recognized author named "Hans von Bertele". It's possible there is a less known author with that name, but without more information, it's difficult to find any specific works.

If you could provide more context, like:

* A specific genre or subject: Is there a particular type of book you are looking for?

* A time period: When did this author potentially publish their work?

* Any other clues: Do you remember anything else about the book or author?

With more information, I might be able to help you track down this author.