@book{15043,
	author = {Villanueva Calderon, Laura Valentina  and Villanueva Calderon, Laura Valentina },
	title = {Asistente Tributario E Implimentacion Sobre Las Nif En La Empresa De Construcciones John Henry Giron Gongora },
	publisher = {ITFIP},
	year = {2017},
	address = {ESPINAL }
}