@book{297467,
	author = {Encyclopaedia Britannica.},
	title = {Gran atlas de la ciencia : },
	publisher = {Editorial Sol 90,},
	year = {2012.},
	series = {Britannica gran atlas de la ciencia},
	address = {Barcelona :},
	url = {https://login.ezproxy.pucpr.edu/login?url=https://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=718043}
}