@misc{OPUS4-11583, title = {Kreis-Kalender f{\"u}r den Kreis K{\"o}nigsberg Nm. f{\"u}r das Jahr 1931}, volume = {6.1931}, institution = {Land Brandenburg}, series = {Kreiskalender f{\"u}r den Kreis K{\"o}nigsberg Nm.}, number = {1931}, type = {periodicalpart}, year = {2016}, }