@book{5038,
	author = {Bermejo, Vicente},
	title = {El niño y la aritmética},
	publisher = {Paidós},
	year = {1990},
	series = {Paidós educador},
	address = {Barcelona},
	edition = {1ª ed.},
	note = {Indice analítico p. 208-210}
}