@book{49888,
	author = {Aldana León, Wilson},
	title = {Evaluemos competencias en Ciencias Sociales 1°- 2°- 3° / },
	publisher = {Cooperativa Editorial Magisterio, },
	year = {2001},
	series = {Colección Evaluemos},
	address = {Bogotá : },
	edition = {1a. ed.}
}