@book{6,
	author = {Servicio Desconcentrado de Normalización, Calidad, Metrología y Reglamentos Técnicos},
	title = {Concreto :},
	publisher = {SENCAMER},
	year = {2022},
	address = {Caracas :},
	edition = {4ta ed.},
	note = {Gaceta Oficial N° 42.359 de fecha 20/04/2022},
	url = {https://sigbs.sencamer.gob.ve/cgi-bin/koha/opac-retrieve-file.pl?id=c32203be4923707c93e1aeb213b505e9}
}