Ansari, Saiyad Hasan Evolution And Spatial Organization Of Clan Settlements. : A Case Study Of Middle Ganga Valley / By Saiyad Hasan Ansari . - 1st ed. - New Delhi: Concept Publishing Company, 1986. - 212p.: 15cm. Biblography & index. Subjects--Index Terms: Geography & travel, Geography Dewey Class. No.: 910