@book{4024,
	author = {Ramos de Valle, Luis Francisco},
	title = {Extrusión de plásticos :},
	publisher = {Limusa : Noriega, },
	year = {2000},
	address = {México :},
	url = {https://www.cicy.mx/sitios/sib/doctoelectronico/4072.pdf}
}