@book{68325,
	author = {Headrick, Daniel R. and García Sanz, Javier, colab.},
	title = {Los Instrumentos del imperio: },
	publisher = {Alianza, },
	year = {c1989},
	address = {Madrid, España: },
	note = {Traducción de: The tools of empire. Technology and european imperialism in the nineteeth century}
}