@book{28912,
	author = {Real Academia Española.},
	title = {Cognitive development and epistemology.},
	publisher = {Academic Press},
	year = {1971.},
	address = {New York},
	note = {"The papers ... were written for a conference ... held at the State University of New York at Binghamton, September 18-22, 1969 ... The conference ... was supported jointly by grant GS-2557 from the National Science Foundation and by the State University of New York at Binghamton."}
}