Singh, Surendra . Proceedings: international conference on environment, locationa decisions and regional planning / edited by Surendra Singh, D.K. Nayak and B.S. Mipun. - Shillong : Geographical Society of North-Eastern Hill Region , 2003 - 254p ; Subjects--Topical Terms: Environment Dewey Class. No.: G:55p1,P02 / P3;3