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2014-11-25T19:58:35+05:30
the people of the indus valley had an excellent and well planned drainage system.the kitchens and the bathrooms had drains connnected to the street drains.the street drains ran along the side of the streets and are usually covered.they had manholes at regular intervals for cleaning.the drainage system proves that the people of the indus valley paid great attention to cleanliness and sanitation.
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