Topographical map 1: 50 000 — Edition State (1979-1989) N-33-110-C Friesack

The topographic maps, referred to as the issuing State (AS), were primarily for military purposes and carried the level of “confidential classified information”. Content levels of TK50 AS are: Floor Plan/Grid Net-Black, Water Blue, Relief/Street Filling/Building Areas-Red Brown, Forest Area Green.本次涉及的地形图由AS（发行国）发布，其主要用途为军事领域，密级为「机密」。 TK50 AS 的内容分层如下： 平面图/网格网——黑色，水系——蓝色，地貌/街道填充/建筑区域——红棕色，林区——绿色。