What has the author P S Barna written?

There is no known author named "P.S. Barna". It's possible you've misspelled the name or are thinking of a different author.

Could you please double-check the spelling or provide any additional information that might help me identify the author you are looking for? For example:

* Are you sure about the initials "P.S."?

* Do you remember any of the author's books?

* Do you know the genre of the books?

With more information, I might be able to help you find the author you're looking for.