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Brockhaus-1911: Petersen [2] · Petersen
Eisler-1912: Petersen, Julius · Petersen, Julius
Herder-1854: Petersen [2] · Petersen [1]
Pagel-1901: Petersen, Oscar · Petersen, Christian Ferdinand
Pataky-1898: Petersen, Marie · Petersen-Wagner, Julie · Petersen, Karoline Wilhelmine · Petersen, Frl. Minna · Petersen, Johanna Eleonora