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GS Geography Physical Geography of World
Q.

Which one of the following organisations is responsible for publishing topographical sheets?
Explanation:

ANS. (D) 
The Survey of India produces a rich “base” of map information through systematic topographical surveys and the use of remote sensing images. Topographic maps provide the graphical portrayal of objects present on the surface of the earth. These maps provide the preliminary information about a terrain and thus very useful for engineering works.

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