@book{19229,
	author = {American Concrete Institute. Detroit, Mich. and Instituto Mexicano del Cemento y del Concreto.},
	title = {Acero de refuerzo de alta resistencia; ACI 439},
	publisher = {American Concrete Institute,},
	year = {1981[c.1975]},
	series = {Nueva serie. IMCYC},
	address = {México :}
}