MIL-PRF-89020A (AMENDMENT 1), PERFORMANCE SPECIFICATION: DIGITAL TERRAIN ELEVATION DATA (27 APR 1999) [SUPERSEDES MIL-D-89020]

MIL-PRF-89020A (AMENDMENT 1), PERFORMANCE SPECIFICATION: DIGITAL TERRAIN ELEVATION DATA (27 APR 1999) [SUPERSEDES MIL-D-89020]., This amendment forms part of MIL-PRF-89020A, dated 19 April 1996, and is approved for use by all Departments and Agencies of the Department of Defense.