Roy, Gouranga Deb Ektokhani Gonit / Gouranga Deb Roy - Dhaka : Somoy Prokashan , 2008 - 327p. : ill. ; 22 cm. ISBN: 9844584779 Subjects--Topical Terms: Mathameticc--AlgebraNeomorology Dewey Class. No.: Be 510 / ROY