VIADUCTOS https://catalogo.escuelaing.edu.co/cgi-bin/koha/opac-shelves.pl?rss=1&viewshelf=200 RSS feed for public list VIADUCTOS IngenierĂ­a de carreteras: by Oglesby, Clarkson Hill https://catalogo.escuelaing.edu.co/cgi-bin/koha/opac-detail.pl?biblionumber=5856 Masonry bridges, viaducts and aqueducts. https://catalogo.escuelaing.edu.co/cgi-bin/koha/opac-detail.pl?biblionumber=8213 Standard specifications for highway bridges. https://catalogo.escuelaing.edu.co/cgi-bin/koha/opac-detail.pl?biblionumber=2933 Standard specifications for highway bridges. https://catalogo.escuelaing.edu.co/cgi-bin/koha/opac-detail.pl?biblionumber=7982 Standard specifications for highway bridges. https://catalogo.escuelaing.edu.co/cgi-bin/koha/opac-detail.pl?biblionumber=7983