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Quadrilateral analysis applied to a city population with an..:

Dhivya Dilipkumar ; Dhinahar Sundar Raj ; Dheena Dayalan..
http://www.ijdr.in/article.asp?issn=0970-9290;year=2020;volume=31;issue=2;spage=263;epage=276;aulast=Dilipkumar.  , 2020