Tender for Providing Of Gis Related Survey Services - Running Meter; Drilling 100 Or 150 Mm Nominal Dia Exploratory Of 20 Nos Borehole In Soil Up To 20 M Below Gl Or Where Refusal Is Reached Whichever Is Earlier Total 400 M Collecting Disturbed And Undisturbed Soil Samples .. in Patna - Bihar

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