@book{28582,
	author = {Fryderyk and Droysen, Johann Gustav and Alexander Duncker Verlag},
	title = {Politische correspondenz Friedrich's des Grossen.},
	editor = {Pierersche Hofbuchdruckerei Stephan Geibel & Co.).},
	publisher = {Verlag von Alexander Duncker,},
	year = {1879},
	address = {Berlin :},
	url = {http://pbc.biaman.pl/publication/55898}
}