@book{105589,
	author = {Llera Poveda, José Manuel,},
	title = {Matemáticas nivel-1 :},
	publisher = {Editorial Popular,},
	year = {[2011]},
	series = {Papel de prueba},
	address = {Madrid :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/155475/}
}