Le Corbusier, The City of Tomorrow and its Planning (NY, 1987), p. 244; Ebenezer Howard, Garden Cities of Tomorrow (London, 1902), p. 18.
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Jonathan M. Kenoyer, Ancient Cities of the Indus Valley Civilisation (Oxford, 1998); R. K. Pruthi, Indus Civilisation (New Delhi, 2004); Andrew Robinson, The Indus: lost civilisations (London, 2015).