You can check for availability of books in Perusall by searching the Perusall catalog; the catalog can be searched by publisher, topic (BISAC code), title, author, or ISBN. (NOTE: the ISBN in Perusall is the ebook ISBN assigned by the publisher, so searching for a print book ISBN may yield no results even if the book exists in our catalog; in these cases, search by title or author.)
If you can't find a particular title, please contact orders@perusall.com.