Could you please clarify which "OWYS" you are looking for a review of? Here are the most likely topics:

A literary journal (often associated with the name "Powys") that provided scholarly commentary on the Powys family writers , such as John Cowper Powys and T.F. Powys.

This may refer to administrative reviews for Powys County Council in Wales, such as local development plans or prescribing indicators. The Powys Review, edited by Belinda Humfrey