Ancient India - Gale in Context
Indus Valley Civilization - Gale in Context
First Civilizations of India - Cavendish Sq.
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"Ancient Indian Ruins." Gale Middle School Online Collection, Gale, 2014. Gale In Context: Middle School, https://link.gale.com/apps/doc/OUWPTG984976937/MSIC?u=nhais_342&sid=MSIC&xid=483931f2. Accessed 23 Jan. 2020.