Thal old son, you're a scholar and a gentleman, and your mate Rob likewise. Many thanks indeed for that. My cellist colleague has a cello part but his ex-wife (and ex-accompanist) took the piano part....
Incidentally, I notice the page numbers start around 60, so it's clearly part of a book including something else - any idea what? I'm not sure if Busoni's entire output for cello and piano would run to that many pages!