@book{13094,
	author = {Brailovsky, Antonio Elio and Consejo Nacional de Investigaciones Científicas y Técnicas [Argentina]},
	title = {El ambiente en la edad media},
	publisher = {Conicet},
	year = {1997},
	series = {Prociencia Conicet},
	address = {Buenos Aires},
	edition = {1ª ed.}
}