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Digital mode 1970 . . .
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Hardware
Software
Hardware:-
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* Keybord
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* Digitiezr
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Data Base . :-
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* Software :-
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* Source Maps :-
Reference maps Field Surveying ɺ .
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Gis :-
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* Air photos :-
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(GPS):-
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* Gps
" " Gps Gps .
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Air to Ground Digital Terrain modals.
Types of photographs
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* planimetmic maps .
* Topographic maps * Extension of ground cntrol net * .
* * field investigation
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+/- 2, .
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25, . .
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Status
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