@book{2492,
	author = {Arnal, Justo },
	title = {Investigación educativa :},
	publisher = {Laboral,},
	year = {1992.},
	address = {España :},
	url = {https://isae.metabiblioteca.org/cgi-bin/koha/opac-retrieve-file.pl?id=513d83dcc848d7616877a931dab3c554}
}