@book{98008,
	author = {Marjoram, Derek Thomas Elliott. and Bozal, J. Luis.},
	title = {Ejercicios de introducción a la matemática moderna / },
	publisher = {Labor, },
	year = {1973.},
	series = {Nuevos manuales técnicos Labor},
	address = {Barcelona : },
	edition = {[1ª ed.].}
}