@book{31464,
	author = {Peralta, José, 1855-1937},
	title = {Teorías del universo},
	series = {Biblioteca básica del pensamiento ecuatoriano},
	url = {http://dspace.ucuenca.edu.ec/bitstream/123456789/4500/3/N%c2%ba%202%20abril-junio%201955%20ingreso%2020993.pdf}
}