What are the different type of polishing clothes used during preparation of a sample for metallographic purpose? On which basis can we select the polishing clothes?
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The most unique aspect of planning during the Indus Valley civilization was the system of underground drainage. The main sewer, 1.5 meters deep and 91 cm across, connected to many north-south and east-west sewers. ... Commoner houses had baths and drains that emptied into underground soakage jars.
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