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2015-05-30T11:52:07+05:30

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Maps 
maps show selected features only the do not appear congested like sketch . maps generally use sign and symbol in different colours and they add legebility of the maps . maps can show small areas also like a village.
sketch
sketch are drawn on the basis of scenes taken from aeroplane or satellites and cover a large area with not detail that a map has and cannot show small areas such as village. they are used mainly to survey the resources in the area
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