@book{246130,
	author = {Feisst, Werner},
	title = {Alexander von Humboldt 1769-1859 : das bild seiner zeit in 200 zeitgenössischen stichen},
	publisher = {Wolfgang Schwarze},
	year = {1978},
	address = {Wuppertal},
	note = {Donación Dr. Federico Vervoorst}
}