@book{5748,
	author = {Cabrera, Blas,  and Sánchez Ron, José Manuel,},
	title = {Principio de relatividad / },
	publisher = {Alta Fulla : "Mundo Cientifico", },
	year = {1986.},
	series = {Noctulabium ; },
	address = {Barcelona : },
	edition = {1a ed.},
	note = {Reprod. facs. de la ed. de Madrid : Publicaciones de la Residencia de Estudiantes, 1923.}
}