"P S Pregosin" is not a widely recognized author name. It's possible:
* There's a typo in the name. Could you double-check the spelling?
* The author uses a different name for their publications. Do you know any other names they might go by?
* The author is not well-known. It's possible the author is relatively obscure.
To help me find the author's works, please provide additional details like:
* Genre of their writing (fiction, non-fiction, poetry, etc.)
* Any specific titles or works you know about
* Any other information you have about the author (nationality, time period, etc.)
With more information, I can help you find the books written by P S Pregosin.