Congresses have a composition of many elements: plenary sessions, public [url=https://alcer.org/empleo/cuando-se-publica-una-oferta-de-empleo-publico/]https://alcer.org/empleo/cuando-se-publica-una-oferta-de-empleo-publico/[/url] and a general hall - these are the main of elements, what necessary to document.