WDB	Observata Diplomatico-Historica De Differentia Nobilivm Medii Et Hodierni Aevi / Leyser, Polykarp *1690-1728*. - Online-Ausg.. - Helmaestadii : Schnorrius, 1727 Permalink: http://diglib.hab.de/drucke/yx-47-8f-helmst-23s/start.htm					Deutsch
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