What has the author O Rostoski written?

There is no known author named "O Rostoski." It's possible you've misspelled the name, or it's a pseudonym.

Could you please double-check the spelling or provide any additional context about the author? For example:

* What kind of books are you interested in? (e.g., fiction, non-fiction, poetry, etc.)

* Do you know anything about the author's nationality or time period?

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