<![CDATA[Biblioteca Jorge Álvarez Lleras Search for 'an:229 and au:American Water Works Association. AWWA and location:GEN and su-to:PURIFICACIÓN DEL AGUA']]> https://catalogo.escuelaing.edu.co/cgi-bin/koha/opac-search.pl?q=ccl=an%3A229%20and%20au%3AAmerican%20Water%20Works%20Association.%20AWWA%20and%20location%3AGEN%20and%20su-to%3APURIFICACI%C3%83%C2%93N%20DEL%20AGUA&format=rss2 0 20