@book{121874,
	author = {Ramos Pérez, Demetrio and Instituto Juan Sebastián Elcano.},
	title = {El Tratado de límites de 1750 y la expedición de Iturriaga al Orinoco},
	publisher = {Consejo Superior de Investigaciones Científicas, Instituto Juan Sebastián Elcano},
	year = {1946.},
	address = {Madrid},
	note = {Originally presented as the author's thesis, Madrid, 1944.}
}