@book{23860,
	author = {Sears, Francis W. and Bravo Gala, Luis,},
	title = {Fundamentos de física I :},
	publisher = {Aguilar,},
	year = {1967.},
	address = {Madrid :},
	edition = {7a ed.},
	note = {Incluye bibliografia p. [549-553].}
}