http://catalogo.biblioteca.usap.edu/cgi-bin/koha/opac-search.pl?q=ccl=an%3A%224974%22%20and%20au%3AIngo%20Walther%20F.%20and%20available&format=rss2 Search results for 'an:"4974" and au:Ingo Walther F. and available' at Biblioteca Universidad San Pedro de Sula 0 20