What has the author Gerda Robison written?

There seems to be no record of an author named "Gerda Robison". It's possible there's a spelling error or the name is less common.

To help me find the author you're looking for, could you provide:

* Full name: Is there a middle name or another way to spell the name?

* Genre: What kind of books does this author write? (e.g., fiction, non-fiction, children's books, etc.)

* Any other details: Do you know anything else about the author or their works, like a specific book title, publication date, or nationality?

With more information, I can try to find the author you're searching for.