@book{19239,
	author = {American Concrete Institute. Detroit, Mich. and Instituto Mexicano del Cemento y del Concreto.},
	title = {Guía para el empleo de aditivos en el concreto; ACI-212},
	year = {1981(c.1974)},
	series = {Nueva serie. IMCYC},
	address = {México, D.F.,}
}