LEVELLING
Levelling is a process of determining the height of one level relative to another. It is used in surveying to establish the elevation of a point relative to a datum, or to establish a point at a given elevation relative to a datum
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pipe appurtenances Various pipe appurtenances or fixtures are required to carry out inspections, tests, and cleaning and repairing works on ...
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The Earth's Structure The earth is made up of three different layers: the crust, the mantle and the core. The crust This is the out...
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Environmental impact of modern agriculture by Dr.S.Charles Ruskin Kumar
Nice animations
ReplyDeleteNeed more explanation
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ReplyDeleteBrilliant
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