MIL-D-89020 (AMENDMENT 1), MILITARY SPECIFICATION: DIGITAL TERRAIN ELEVATION DATA (31 MAR 1994) [S/S BY MIL-PRF-89020A]

MIL-D-89020 (AMENDMENT 1), MILITARY SPECIFICATION: DIGITAL TERRAIN ELEVATION DATA (31 MAR 1994) [S/S BY MIL-PRF-89020A]., This amendment forms a part of MIL-D-89020, dated 28 May 1993, and is approved for use by all Departments and Agencies of the Department of Defense.