Topographische Karte 1 : 25 000 - Ausgabe Staat (1981-1989) N-33-111-D-c Birkenwerder b.Berlin

The topographical maps, referred to as the issuing State (AS), were primarily for military purposes and carried the classification level of Confidential classified information. In scale 1: There were 25,000 output variants: TK=topographic maps and TSP=topographic city maps.本次涉及的地形图由AS国发布，主要用于军事领域，其保密等级为机密级。在比例尺1:的标准下，该数据集共包含25000种输出变体，其中TK代表地形图，TSP代表城市地形图。