What has the author John Rowbotham written?

It seems you're asking about an author named John Rowbotham. However, there is no widely recognized author with that exact name. It's possible that:

* There's a typo in the name: Could you double-check the spelling?

* The author uses a different name: Perhaps they publish under a pseudonym.

* The author is relatively unknown: They might have published independently or in a niche genre.

To help me find the author you're looking for, please provide any additional information you have, such as:

* What kind of books do they write? (Genre, topics)

* Any other details about them? (Nationality, era they write in)

* Any titles of their books?

With more information, I can help you find the author you're looking for.