?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.date=1993&rft.isbn=963-7179-55-0&rft.btitle=Dr.+Purjesz+B%C3%A9la+1884-1959&rft.genre=book