@misc{OPUS4-12038, title = {Kreiskalender f{\"u}r die Kreise Calau - Cottbus - Spremberg 1923}, institution = {Land Brandenburg}, series = {Kreiskalender f{\"u}r die Kreise Calau - Cottbus - Spremberg}, number = {1923}, type = {periodicalpart}, pages = {33}, year = {2017}, }