Reference: TLM50
Status:
STD 2005/06/07
Reference text:
US National Geospatial-Intelligence Agency
(NGA).
1:50 Topographic Line Map (1:50 TLM)
[online]. Fairfax (Virginia): DMA, 1995 [cited 13 March 2012]. Available from World Wide Web <
http://earth-info.nga.mil/publications/specs/printed/89301/89301A.pdf
>. Military specification MIL-T-89301A (DMA).
Normative:
No
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