https://library.cksc.edu.ph//cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22%22%C3%A9%C2%BB%C2%83%C3%A5%C2%98%C2%89%C3%A6%C2%AD%C2%B7%C3%A8%C2%AD%C2%AF%20%28%C3%A5%C2%BE%C2%B7%29Ludwig%2C%20Emil%C3%A8%C2%91%C2%97%22%22&format=rss2 0 20