Search for: [Subject and Keywords = topographic maps] OR [Subject and Keywords = military maps] OR [Subject and Keywords = fortifications] OR [Subject and Keywords = Kalisz region] OR [Subject and Keywords = Fortyfikacje \-\- Polska Kalisz \(region\) \-\- 1900\-1945 \-\- mapy \[KABA\]] OR [Subject and Keywords = Kalisz \(Polska \; region\) \-\- mapy \[KABA\]] OR [Subject and Keywords = Mapy topograficzne \-\- 1900\-1945 \[KABA\]] OR [Subject and Keywords = Mapy wojskowe \-\-1900\-1945 \[KABA\]] OR [Title = Befestigunskarte Polen 1\:100 000. 81, Kalisz] OR [Creator = Niemcy. Heer. Heeresplankammer. Drukarz] OR [Creator = Niemcy. Heer. Generalstab. Abteilung für Kriegskarten und Vermessungswesen. Redaktor]