Reference: PTADB
Status:
STD 2005/06/07
Reference text:
US National Geospatial-Intelligence Agency
(NGA).
Planning Terrain Analysis Data Base (PTADB)
[online]. Fairfax (Virginia): DMA, 1994 [cited 24 November 2010]. Scale 1:250,000. Available from World Wide Web: <
http://earth-info.nga.mil/publications/specs/printed/89305/89305a.pdf
>. Military specification MIL-P-89305A.
Normative:
No
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