Since the UC Berkeley Libraries have a world-class collection used by scholars who speak and read many languages, you may see many non-English titles in your search results. If you prefer to see only English-language materials, you can limit your search results in OskiCat or Melvyl by language.
In OskiCat: After you search, click on either the Modify Search or Sort/Limit Results buttons near the top of the page. Under Languages, select English on the pull-down menu, then click the Submit button. (You can also select more than one language by holding down the Ctrl key on a PC, or the Command key on a Mac.)
In Melvyl: After you search, look for the "refine your search" sidebar () on the left side of your search results page. Scroll down to see an option to limit your results by language.